Revert "Cherry pick two patches from trunk for M39 branch"

This reverts commit 3392b6b1e150c7ed19f9fd9db7b03071541c7e8f
(removes the patch for http://crbug.com/432209 : not approved for M39
branch) and adds patches/regex.patch (the missing patch file added later
to record what's changed for http://crbug.com/422824 the patch for which
is approved for M39)

With this change, M39 branch will have the following CLs merged
since the branch was cut.

https://codereview.chromium.org/732743002 (actual patch for two bugs below)
https://codereview.chromium.org/719943004 (the patch file for the record)

BUG=422824, 430353
TEST=See bugs.
TBR=amineer@chromium.org

Review URL: https://codereview.chromium.org/785913006
diff --git a/README.chromium b/README.chromium
index fc1e7be..d00d6cf 100644
--- a/README.chromium
+++ b/README.chromium
@@ -237,9 +237,8 @@
     - patches/bidi.patch
     - upstream bug : http://bugs.icu-project.org/trac/ticket/11054
 
-12. Apply the following patches for regex
-   - patches/regex.patch and patches/regex2.patch
+12. Apply the following patch for regex
+   - patches/regex.patch
    - upstream bugs : http://bugs.icu-project.org/trac/ticket/11369
                      http://bugs.icu-project.org/trac/ticket/11370
-                     http://bugs.icu-project.org/trac/ticket/11371
 
diff --git a/patches/regex2.patch b/patches/regex2.patch
deleted file mode 100644
index 808553e..0000000
--- a/patches/regex2.patch
+++ /dev/null
@@ -1,991 +0,0 @@
-Index: source/common/unicode/utypes.h
-===================================================================
---- source/common/unicode/utypes.h	(revision 292709)
-+++ source/common/unicode/utypes.h	(working copy)
-@@ -647,6 +647,7 @@
-     U_REGEX_STACK_OVERFLOW,               /**< Regular expression backtrack stack overflow.       */
-     U_REGEX_TIME_OUT,                     /**< Maximum allowed match time exceeded                */
-     U_REGEX_STOPPED_BY_CALLER,            /**< Matching operation aborted by user callback fn.    */
-+    U_REGEX_PATTERN_TOO_BIG,              /**< Pattern exceeds limits on size or complexity.      */
-     U_REGEX_ERROR_LIMIT,                  /**< This must always be the last value to indicate the limit for regexp errors */
- 
-     /*
-Index: source/common/utypes.c
-===================================================================
---- source/common/utypes.c	(revision 292709)
-+++ source/common/utypes.c	(working copy)
-@@ -165,7 +165,8 @@
-     "U_REGEX_INVALID_RANGE",
-     "U_REGEX_STACK_OVERFLOW",
-     "U_REGEX_TIME_OUT",
--    "U_REGEX_STOPPED_BY_CALLER"
-+    "U_REGEX_STOPPED_BY_CALLER",
-+    "U_REGEX_PATTERN_TOO_BIG"
- };
- 
- static const char * const
-Index: source/i18n/regexcmp.cpp
-===================================================================
---- source/i18n/regexcmp.cpp	(revision 292943)
-+++ source/i18n/regexcmp.cpp	(working copy)
-@@ -302,7 +302,7 @@
-     //   present in the saved state:  the input string position (int64_t) and
-     //   the position in the compiled pattern.
-     //
--    fRXPat->fFrameSize+=RESTACKFRAME_HDRCOUNT;
-+    allocateStackData(RESTACKFRAME_HDRCOUNT);
- 
-     //
-     // Optimization pass 1: NOPs, back-references, and case-folding
-@@ -368,9 +368,9 @@
-         //                    the start of an ( grouping.
-         //4   NOP             Resreved, will be replaced by a save if there are
-         //                    OR | operators at the top level
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_STATE_SAVE, 2), *fStatus);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_JMP,  3), *fStatus);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_FAIL, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_STATE_SAVE, 2));
-+        appendOp(URX_BUILD(URX_JMP,  3));
-+        appendOp(URX_BUILD(URX_FAIL, 0));
- 
-         // Standard open nonCapture paren action emits the two NOPs and
-         //   sets up the paren stack frame.
-@@ -393,7 +393,7 @@
-         }
- 
-         // add the END operation to the compiled pattern.
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_END, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_END, 0));
- 
-         // Terminate the pattern compilation state machine.
-         returnVal = FALSE;
-@@ -422,7 +422,7 @@
-             //  the JMP will eventually be the location following the ')' for the
-             //  group.  This will be patched in later, when the ')' is encountered.
-             op = URX_BUILD(URX_JMP, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Push the position of the newly added JMP op onto the parentheses stack.
-             // This registers if for fixup when this block's close paren is encountered.
-@@ -431,7 +431,7 @@
-             // Append a NOP to the compiled pattern.  This is the slot reserved
-             //   for a SAVE in the event that there is yet another '|' following
-             //   this one.
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_NOP, 0));
-             fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus);
-         }
-         break;
-@@ -457,12 +457,11 @@
-         //      END_CAPTURE is encountered.
-         {
-             fixLiterals();
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
--            int32_t  varsLoc    = fRXPat->fFrameSize;    // Reserve three slots in match stack frame.
--            fRXPat->fFrameSize += 3;
--            int32_t  cop        = URX_BUILD(URX_START_CAPTURE, varsLoc);
--            fRXPat->fCompiledPat->addElement(cop, *fStatus);
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_NOP, 0));
-+            int32_t  varsLoc = allocateStackData(3);    // Reserve three slots in match stack frame.
-+            int32_t  cop     = URX_BUILD(URX_START_CAPTURE, varsLoc);
-+            appendOp(cop);
-+            appendOp(URX_BUILD(URX_NOP, 0));
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the two NOPs.  Depending on what follows in the pattern, the
-@@ -487,8 +486,8 @@
-         //             is an '|' alternation within the parens.
-         {
-             fixLiterals();
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_NOP, 0));
-+            appendOp(URX_BUILD(URX_NOP, 0));
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the two NOPs.
-@@ -510,12 +509,11 @@
-         //             is an '|' alternation within the parens.
-         {
-             fixLiterals();
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
--            int32_t  varLoc    = fRXPat->fDataSize;    // Reserve a data location for saving the
--            fRXPat->fDataSize += 1;                    //  state stack ptr.
--            int32_t  stoOp     = URX_BUILD(URX_STO_SP, varLoc);
--            fRXPat->fCompiledPat->addElement(stoOp, *fStatus);
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_NOP, 0));
-+            int32_t  varLoc = allocateData(1);    // Reserve a data location for saving the state stack ptr.
-+            int32_t  stoOp = URX_BUILD(URX_STO_SP, varLoc);
-+            appendOp(stoOp);
-+            appendOp(URX_BUILD(URX_NOP, 0));
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the two NOPs.  Depending on what follows in the pattern, the
-@@ -558,26 +556,25 @@
-         //  Two data slots are reserved, for saving the stack ptr and the input position.
-         {
-             fixLiterals();
--            int32_t dataLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize += 2;
-+            int32_t dataLoc = allocateData(2);
-             int32_t op = URX_BUILD(URX_LA_START, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+ 2);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             op = URX_BUILD(URX_JMP, fRXPat->fCompiledPat->size()+ 3);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            
-+            appendOp(op);
-+
-             op = URX_BUILD(URX_LA_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             op = URX_BUILD(URX_BACKTRACK, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            
-+            appendOp(op);
-+
-             op = URX_BUILD(URX_NOP, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-+            appendOp(op);
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the NOPs.
-@@ -602,16 +599,15 @@
-         //                                        an alternate (transparent) region.
-         {
-             fixLiterals();
--            int32_t dataLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize += 2;
-+            int32_t dataLoc = allocateData(2);
-             int32_t op = URX_BUILD(URX_LA_START, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             op = URX_BUILD(URX_STATE_SAVE, 0);    // dest address will be patched later.
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             op = URX_BUILD(URX_NOP, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the StateSave and NOP.
-@@ -649,23 +645,22 @@
-             fixLiterals();
- 
-             // Allocate data space
--            int32_t dataLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize += 4;
-+            int32_t dataLoc = allocateData(4);
- 
-             // Emit URX_LB_START
-             int32_t op = URX_BUILD(URX_LB_START, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Emit URX_LB_CONT
-             op = URX_BUILD(URX_LB_CONT, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MinMatchLength.  To be filled later.
--            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MaxMatchLength.  To be filled later.
-+            appendOp(op);
-+            appendOp(0);    // MinMatchLength.  To be filled later.
-+            appendOp(0);    // MaxMatchLength.  To be filled later.
- 
-             // Emit the NOP
-             op = URX_BUILD(URX_NOP, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-+            appendOp(op);
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the URX_LB_CONT and the NOP.
-@@ -705,24 +700,23 @@
-             fixLiterals();
- 
-             // Allocate data space
--            int32_t dataLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize += 4;
-+            int32_t dataLoc = allocateData(4);
- 
-             // Emit URX_LB_START
-             int32_t op = URX_BUILD(URX_LB_START, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Emit URX_LBN_CONT
-             op = URX_BUILD(URX_LBN_CONT, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MinMatchLength.  To be filled later.
--            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MaxMatchLength.  To be filled later.
--            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // Continue Loc.    To be filled later.
-+            appendOp(op);
-+            appendOp(0);    // MinMatchLength.  To be filled later.
-+            appendOp(0);    // MaxMatchLength.  To be filled later.
-+            appendOp(0);    // Continue Loc.    To be filled later.
- 
-             // Emit the NOP
-             op = URX_BUILD(URX_NOP, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-+            appendOp(op);
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the URX_LB_CONT and the NOP.
-@@ -793,11 +787,10 @@
-                 if (URX_TYPE(repeatedOp) == URX_SETREF) {
-                     // Emit optimized code for [char set]+
-                     int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp));
--                    fRXPat->fCompiledPat->addElement(loopOpI, *fStatus);
--                    frameLoc = fRXPat->fFrameSize;
--                    fRXPat->fFrameSize++;
-+                    appendOp(loopOpI);
-+                    frameLoc = allocateStackData(1);
-                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc);
--                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
-+                    appendOp(loopOpC);
-                     break;
-                 }
- 
-@@ -813,11 +806,10 @@
-                     if (fModeFlags & UREGEX_UNIX_LINES) {
-                         loopOpI |= 2;
-                     }
--                    fRXPat->fCompiledPat->addElement(loopOpI, *fStatus);
--                    frameLoc = fRXPat->fFrameSize;
--                    fRXPat->fFrameSize++;
-+                    appendOp(loopOpI);
-+                    frameLoc = allocateStackData(1);
-                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc);
--                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
-+                    appendOp(loopOpC);
-                     break;
-                 }
- 
-@@ -831,18 +823,17 @@
-                 // Zero length match is possible.
-                 // Emit the code sequence that can handle it.
-                 insertOp(topLoc);
--                frameLoc =  fRXPat->fFrameSize;
--                fRXPat->fFrameSize++;
-+                frameLoc = allocateStackData(1);
- 
-                 int32_t op = URX_BUILD(URX_STO_INP_LOC, frameLoc);
-                 fRXPat->fCompiledPat->setElementAt(op, topLoc);
- 
-                 op = URX_BUILD(URX_JMP_SAV_X, topLoc+1);
--                fRXPat->fCompiledPat->addElement(op, *fStatus);
-+                appendOp(op);
-             } else {
-                 // Simpler code when the repeated body must match something non-empty
-                 int32_t  jmpOp  = URX_BUILD(URX_JMP_SAV, topLoc);
--                fRXPat->fCompiledPat->addElement(jmpOp, *fStatus);
-+                appendOp(jmpOp);
-             }
-         }
-         break;
-@@ -855,7 +846,7 @@
-         {
-             int32_t topLoc      = blockTopLoc(FALSE);
-             int32_t saveStateOp = URX_BUILD(URX_STATE_SAVE, topLoc);
--            fRXPat->fCompiledPat->addElement(saveStateOp, *fStatus);
-+            appendOp(saveStateOp);
-         }
-         break;
- 
-@@ -892,10 +883,10 @@
-             fRXPat->fCompiledPat->setElementAt(jmp1_op, jmp1_loc);
- 
-             int32_t  jmp2_op  = URX_BUILD(URX_JMP, jmp2_loc+2);
--            fRXPat->fCompiledPat->addElement(jmp2_op, *fStatus);
-+            appendOp(jmp2_op);
- 
-             int32_t  save_op  = URX_BUILD(URX_STATE_SAVE, jmp1_loc+1);
--            fRXPat->fCompiledPat->addElement(save_op, *fStatus);
-+            appendOp(save_op);
-         }
-         break;
- 
-@@ -937,10 +928,9 @@
-                     // Emit optimized code for a [char set]*
-                     int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp));
-                     fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc);
--                    dataLoc = fRXPat->fFrameSize;
--                    fRXPat->fFrameSize++;
-+                    dataLoc = allocateStackData(1);
-                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc);
--                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
-+                    appendOp(loopOpC);
-                     break;
-                 }
- 
-@@ -957,10 +947,9 @@
-                         loopOpI |= 2;
-                     }
-                     fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc);
--                    dataLoc = fRXPat->fFrameSize;
--                    fRXPat->fFrameSize++;
-+                    dataLoc = allocateStackData(1);
-                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc);
--                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
-+                    appendOp(loopOpC);
-                     break;
-                 }
-             }
-@@ -975,8 +964,7 @@
-             //    extra loop-breaking code.
-             if (minMatchLength(saveStateLoc, fRXPat->fCompiledPat->size()-1) == 0) {
-                 insertOp(saveStateLoc);
--                dataLoc =  fRXPat->fFrameSize;
--                fRXPat->fFrameSize++;
-+                dataLoc = allocateStackData(1);
- 
-                 int32_t op = URX_BUILD(URX_STO_INP_LOC, dataLoc);
-                 fRXPat->fCompiledPat->setElementAt(op, saveStateLoc+1);
-@@ -992,7 +980,7 @@
-             fRXPat->fCompiledPat->setElementAt(saveStateOp, saveStateLoc);
- 
-             // Append the URX_JMP_SAV or URX_JMPX operation to the compiled pattern.
--            fRXPat->fCompiledPat->addElement(jmpOp, *fStatus);
-+            appendOp(jmpOp);
-         }
-         break;
- 
-@@ -1009,7 +997,7 @@
-             int32_t     jmpOp   = URX_BUILD(URX_JMP, saveLoc);
-             int32_t     stateSaveOp = URX_BUILD(URX_STATE_SAVE, jmpLoc+1);
-             fRXPat->fCompiledPat->setElementAt(jmpOp, jmpLoc);
--            fRXPat->fCompiledPat->addElement(stateSaveOp, *fStatus);
-+            appendOp(stateSaveOp);
-         }
-         break;
- 
-@@ -1078,9 +1066,9 @@
- 
-             // First the STO_SP before the start of the loop
-             insertOp(topLoc);
--            int32_t  varLoc    = fRXPat->fDataSize;    // Reserve a data location for saving the
--            fRXPat->fDataSize += 1;                    //  state stack ptr.
--            int32_t  op        = URX_BUILD(URX_STO_SP, varLoc);
-+
-+            int32_t  varLoc = allocateData(1);   // Reserve a data location for saving the
-+            int32_t  op     = URX_BUILD(URX_STO_SP, varLoc);
-             fRXPat->fCompiledPat->setElementAt(op, topLoc);
- 
-             int32_t loopOp = (int32_t)fRXPat->fCompiledPat->popi();
-@@ -1090,7 +1078,7 @@
- 
-             // Then the LD_SP after the end of the loop
-             op = URX_BUILD(URX_LD_SP, varLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
- 
-         break;
-@@ -1134,7 +1122,7 @@
-             } else {
-                 op = URX_BUILD(URX_DOTANY, 0);
-             }
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -1151,7 +1139,7 @@
-             } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) {
-                 op = URX_CARET_M_UNIX;
-             }
--            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
-+            appendOp(URX_BUILD(op, 0));
-         }
-         break;
- 
-@@ -1168,13 +1156,13 @@
-             } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) {
-                 op = URX_DOLLAR_MD;
-             }
--            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
-+            appendOp(URX_BUILD(op, 0));
-         }
-         break;
- 
-     case doBackslashA:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_CARET, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_CARET, 0));
-         break;
- 
-     case doBackslashB:
-@@ -1186,7 +1174,7 @@
-             #endif
-             fixLiterals(FALSE);
-             int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B;
--            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 1), *fStatus);
-+            appendOp(URX_BUILD(op, 1));
-         }
-         break;
- 
-@@ -1199,63 +1187,59 @@
-             #endif
-             fixLiterals(FALSE);
-             int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B;
--            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
-+            appendOp(URX_BUILD(op, 0));
-         }
-         break;
- 
-     case doBackslashD:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 1), *fStatus);
-+        appendOp(URX_BUILD(URX_BACKSLASH_D, 1));
-         break;
- 
-     case doBackslashd:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_BACKSLASH_D, 0));
-         break;
- 
-     case doBackslashG:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_G, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_BACKSLASH_G, 0));
-         break;
- 
-     case doBackslashS:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(
--            URX_BUILD(URX_STAT_SETREF_N, URX_ISSPACE_SET), *fStatus);
-+        appendOp(URX_BUILD(URX_STAT_SETREF_N, URX_ISSPACE_SET));
-         break;
- 
-     case doBackslashs:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(
--            URX_BUILD(URX_STATIC_SETREF, URX_ISSPACE_SET), *fStatus);
-+        appendOp(URX_BUILD(URX_STATIC_SETREF, URX_ISSPACE_SET));
-         break;
- 
-     case doBackslashW:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(
--            URX_BUILD(URX_STAT_SETREF_N, URX_ISWORD_SET), *fStatus);
-+        appendOp(URX_BUILD(URX_STAT_SETREF_N, URX_ISWORD_SET));
-         break;
- 
-     case doBackslashw:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(
--            URX_BUILD(URX_STATIC_SETREF, URX_ISWORD_SET), *fStatus);
-+        appendOp(URX_BUILD(URX_STATIC_SETREF, URX_ISWORD_SET));
-         break;
- 
-     case doBackslashX:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_X, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_BACKSLASH_X, 0));
-         break;
- 
- 
-     case doBackslashZ:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_DOLLAR, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_DOLLAR, 0));
-         break;
- 
-     case doBackslashz:
-         fixLiterals(FALSE);
--        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_Z, 0), *fStatus);
-+        appendOp(URX_BUILD(URX_BACKSLASH_Z, 0));
-         break;
- 
-     case doEscapeError:
-@@ -1321,7 +1305,7 @@
-             } else {
-                 op = URX_BUILD(URX_BACKREF, groupNum);
-             }
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -1342,22 +1326,21 @@
-         {
-             // Emit the STO_SP
-             int32_t   topLoc = blockTopLoc(TRUE);
--            int32_t   stoLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
-+            int32_t   stoLoc = allocateData(1);  // Reserve the data location for storing save stack ptr.
-             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
-             fRXPat->fCompiledPat->setElementAt(op, topLoc);
- 
-             // Emit the STATE_SAVE
-             op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+2);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Emit the JMP
-             op = URX_BUILD(URX_JMP, topLoc+1);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Emit the LD_SP
-             op = URX_BUILD(URX_LD_SP, stoLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -1377,8 +1360,7 @@
-             insertOp(topLoc);
- 
-             // emit   STO_SP     loc
--            int32_t   stoLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
-+            int32_t   stoLoc = allocateData(1);    // Reserve the data location for storing save stack ptr.
-             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
-             fRXPat->fCompiledPat->setElementAt(op, topLoc);
- 
-@@ -1389,11 +1371,11 @@
- 
-             // Append the JMP operation.
-             op = URX_BUILD(URX_JMP, topLoc+1);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Emit the LD_SP       loc
-             op = URX_BUILD(URX_LD_SP, stoLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -1412,8 +1394,7 @@
-             insertOp(topLoc);
- 
-             // Emit the STO_SP
--            int32_t   stoLoc = fRXPat->fDataSize;
--            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
-+            int32_t   stoLoc = allocateData(1);   // Reserve the data location for storing save stack ptr.
-             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
-             fRXPat->fCompiledPat->setElementAt(op, topLoc);
- 
-@@ -1424,7 +1405,7 @@
- 
-             // Emit the LD_SP
-             op = URX_BUILD(URX_LD_SP, stoLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -1481,8 +1462,8 @@
-         //             is an '|' alternation within the parens.
-         {
-             fixLiterals(FALSE);
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_NOP, 0));
-+            appendOp(URX_BUILD(URX_NOP, 0));
- 
-             // On the Parentheses stack, start a new frame and add the postions
-             //   of the two NOPs (a normal non-capturing () frame, except for the
-@@ -1862,7 +1843,7 @@
-         } else {
-             op = URX_BUILD(URX_ONECHAR, lastCodePoint);
-         }
--        fRXPat->fCompiledPat->addElement(op, *fStatus);
-+        appendOp(op);
-     } else {
-         // Two or more chars, emit a URX_STRING to match them.
-         if (fModeFlags & UREGEX_CASE_INSENSITIVE) {
-@@ -1872,12 +1853,19 @@
-             //             into two single char ops, for efficiency.
-             op = URX_BUILD(URX_STRING, fRXPat->fLiteralText.length());
-         }
--        fRXPat->fCompiledPat->addElement(op, *fStatus);
-+        appendOp(op);
-         op = URX_BUILD(URX_STRING_LEN, fLiteralChars.length());
--        fRXPat->fCompiledPat->addElement(op, *fStatus);
--        
-+        appendOp(op);
-+
-         // Add this string into the accumulated strings of the compiled pattern.
-+        // The total size of the accumulated strings must be restricted to 24 bits because
-+        // string indexes appear as compiled pattern operand values.
-+        // This is the only place that the pattern.fLiteralText string is modified.
-+
-         fRXPat->fLiteralText.append(fLiteralChars);
-+        if (U_SUCCESS(*fStatus) && fRXPat->fLiteralText.length() > 0x00ffffff) {
-+            *fStatus = U_REGEX_PATTERN_TOO_BIG;
-+        }
-     }
- 
-     fLiteralChars.remove();
-@@ -1884,10 +1872,22 @@
- }
- 
- 
-+//------------------------------------------------------------------------------
-+//
-+//   appendOp()             Append a new instruction onto the compiled pattern
-+//                          Includes error checking, limiting the size of the
-+//                          pattern to lengths that can be represented in the
-+//                          24 bit operand field of an instruction.
-+//
-+//------------------------------------------------------------------------------
-+void RegexCompile::appendOp(int32_t op) {
-+    fRXPat->fCompiledPat->addElement(op, *fStatus);
-+    if ((fRXPat->fCompiledPat->size() > 0x00fffff0) && U_SUCCESS(*fStatus)) {
-+        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-+    }
-+}
- 
- 
--
--
- //------------------------------------------------------------------------------
- //
- //   insertOp()             Insert a slot for a new opcode into the already
-@@ -1947,9 +1947,61 @@
- }
- 
- 
-+//------------------------------------------------------------------------------
-+//
-+//   allocateData()        Allocate storage in the matcher's static data area.
-+//                         Return the index for the newly allocated data.
-+//                         The storage won't actually exist until we are running a match
-+//                         operation, but the storage indexes are inserted into various
-+//                         opcodes while compiling the pattern.
-+//
-+//------------------------------------------------------------------------------
-+int32_t RegexCompile::allocateData(int32_t size) {
-+    if (U_FAILURE(*fStatus)) {
-+        return 0;
-+    }
-+    if (size <= 0 || size > 0x100 || fRXPat->fDataSize < 0) {
-+        *fStatus = U_REGEX_INTERNAL_ERROR;
-+        return 0;
-+    }
-+    int32_t dataIndex = fRXPat->fDataSize;
-+    fRXPat->fDataSize += size;
-+    if (fRXPat->fDataSize >= 0x00fffff0) {
-+        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-+    }
-+    return dataIndex;
-+}
- 
-+
- //------------------------------------------------------------------------------
- //
-+//   allocateStackData()   Allocate space in the back-tracking stack frame.
-+//                         Return the index for the newly allocated data.
-+//                         The frame indexes are inserted into various
-+//                         opcodes while compiling the pattern, meaning that frame
-+//                         size must be restricted to the size that will fit
-+//                         as an operand (24 bits).
-+//
-+//------------------------------------------------------------------------------
-+int32_t RegexCompile::allocateStackData(int32_t size) {
-+    if (U_FAILURE(*fStatus)) {
-+        return 0;
-+    }
-+    if (size <= 0 || size > 0x100 || fRXPat->fFrameSize < 0) {
-+        *fStatus = U_REGEX_INTERNAL_ERROR;
-+        return 0;
-+    }
-+    int32_t dataIndex = fRXPat->fFrameSize;
-+    fRXPat->fFrameSize += size;
-+    if (fRXPat->fFrameSize >= 0x00fffff0) {
-+        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-+    }
-+    return dataIndex;
-+}
-+
-+
-+//------------------------------------------------------------------------------
-+//
- //   blockTopLoc()          Find or create a location in the compiled pattern
- //                          at the start of the operation or block that has
- //                          just been compiled.  Needed when a quantifier (* or
-@@ -2065,7 +2117,7 @@
- 
-             int32_t   frameVarLocation = URX_VAL(captureOp);
-             int32_t   endCaptureOp = URX_BUILD(URX_END_CAPTURE, frameVarLocation);
--            fRXPat->fCompiledPat->addElement(endCaptureOp, *fStatus);
-+            appendOp(endCaptureOp);
-         }
-         break;
-     case atomic:
-@@ -2077,7 +2129,7 @@
-             U_ASSERT(URX_TYPE(stoOp) == URX_STO_SP);
-             int32_t   stoLoc = URX_VAL(stoOp);
-             int32_t   ldOp   = URX_BUILD(URX_LD_SP, stoLoc);
--            fRXPat->fCompiledPat->addElement(ldOp, *fStatus);
-+            appendOp(ldOp);
-         }
-         break;
- 
-@@ -2087,7 +2139,7 @@
-             U_ASSERT(URX_TYPE(startOp) == URX_LA_START);
-             int32_t dataLoc  = URX_VAL(startOp);
-             int32_t op       = URX_BUILD(URX_LA_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-         }
-         break;
- 
-@@ -2098,11 +2150,11 @@
-             U_ASSERT(URX_TYPE(startOp) == URX_LA_START);
-             int32_t dataLoc  = URX_VAL(startOp);
-             int32_t op       = URX_BUILD(URX_LA_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-             op               = URX_BUILD(URX_BACKTRACK, 0);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-             op               = URX_BUILD(URX_LA_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Patch the URX_SAVE near the top of the block.
-             // The destination of the SAVE is the final LA_END that was just added.
-@@ -2123,9 +2175,9 @@
-             U_ASSERT(URX_TYPE(startOp) == URX_LB_START);
-             int32_t dataLoc  = URX_VAL(startOp);
-             int32_t op       = URX_BUILD(URX_LB_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
--                    op       = URX_BUILD(URX_LA_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
-+            op = URX_BUILD(URX_LA_END, dataLoc);
-+            appendOp(op);
- 
-             // Determine the min and max bounds for the length of the
-             //  string that the pattern can match.
-@@ -2162,7 +2214,7 @@
-             U_ASSERT(URX_TYPE(startOp) == URX_LB_START);
-             int32_t dataLoc  = URX_VAL(startOp);
-             int32_t op       = URX_BUILD(URX_LBN_END, dataLoc);
--            fRXPat->fCompiledPat->addElement(op, *fStatus);
-+            appendOp(op);
- 
-             // Determine the min and max bounds for the length of the
-             //  string that the pattern can match.
-@@ -2228,7 +2280,7 @@
-     case 0:
-         {
-             // Set of no elements.   Always fails to match.
--            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKTRACK, 0), *fStatus);
-+            appendOp(URX_BUILD(URX_BACKTRACK, 0));
-             delete theSet;
-         }
-         break;
-@@ -2250,7 +2302,7 @@
-             int32_t setNumber = fRXPat->fSets->size();
-             fRXPat->fSets->addElement(theSet, *fStatus);
-             int32_t setOp = URX_BUILD(URX_SETREF, setNumber);
--            fRXPat->fCompiledPat->addElement(setOp, *fStatus);
-+            appendOp(setOp);
-         }
-     }
- }
-@@ -2289,11 +2341,8 @@
-     //        counterLoc   -->  Loop counter
-     //               +1    -->  Input index (for breaking non-progressing loops)
-     //                          (Only present if unbounded upper limit on loop)
--    int32_t   counterLoc = fRXPat->fFrameSize;
--    fRXPat->fFrameSize++;
--    if (fIntervalUpper < 0) {
--        fRXPat->fFrameSize++;
--    }
-+    int32_t   dataSize = fIntervalUpper < 0 ? 2 : 1;
-+    int32_t   counterLoc = allocateStackData(dataSize);
- 
-     int32_t   op = URX_BUILD(InitOp, counterLoc);
-     fRXPat->fCompiledPat->setElementAt(op, topOfBlock);
-@@ -2313,7 +2362,7 @@
-     // Apend the CTR_LOOP op.  The operand is the location of the CTR_INIT op.
-     //   Goes at end of the block being looped over, so just append to the code so far.
-     op = URX_BUILD(LoopOp, topOfBlock);
--    fRXPat->fCompiledPat->addElement(op, *fStatus);
-+    appendOp(op);
- 
-     if ((fIntervalLow & 0xff000000) != 0 ||
-         (fIntervalUpper > 0 && (fIntervalUpper & 0xff000000) != 0)) {
-@@ -2380,12 +2429,12 @@
-     int32_t i;
-     for (i=1; i<fIntervalUpper; i++ ) {
-         if (i == fIntervalLow) {
--            fRXPat->fCompiledPat->addElement(saveOp, *fStatus);
-+            appendOp(saveOp);
-         }
-         if (i > fIntervalLow) {
--            fRXPat->fCompiledPat->addElement(saveOp, *fStatus);
-+            appendOp(saveOp);
-         }
--        fRXPat->fCompiledPat->addElement(op, *fStatus);
-+        appendOp(op);
-     }
-     return TRUE;
- }
-Index: source/i18n/regexcmp.h
-===================================================================
---- source/i18n/regexcmp.h	(revision 292943)
-+++ source/i18n/regexcmp.h	(working copy)
-@@ -103,6 +103,11 @@
-     void        fixLiterals(UBool split=FALSE);      // Generate code for pending literal characters.
-     void        insertOp(int32_t where);             // Open up a slot for a new op in the
-                                                      //   generated code at the specified location.
-+    void        appendOp(int32_t op);                // Append a new op to the compiled pattern.
-+    int32_t     allocateData(int32_t size);          // Allocate space in the matcher data area.
-+                                                     //   Return index of the newly allocated data.
-+    int32_t     allocateStackData(int32_t size);     // Allocate space in the match back-track stack frame.
-+                                                     //   Return offset index in the frame.
-     int32_t     minMatchLength(int32_t start,
-                                int32_t end);
-     int32_t     maxMatchLength(int32_t start,
-Index: source/i18n/regeximp.cpp
-===================================================================
---- source/i18n/regeximp.cpp	(revision 292709)
-+++ source/i18n/regeximp.cpp	(working copy)
-@@ -12,6 +12,8 @@
- 
- #if !UCONFIG_NO_REGULAR_EXPRESSIONS
- #include "regeximp.h"
-+
-+#include "uassert.h"
- #include "unicode/utf16.h"
- 
- U_NAMESPACE_BEGIN
-@@ -113,7 +115,27 @@
-     return fIndex;
- }
- 
-+// Assemble a pcode instruction from the opcode and operand values.
-+// Out-of-range values should not occur - if they do it is from an internal
-+// error in the regex compiler. 
- 
-+// TODO: move into regexcmp, where it has access to fStatus.
-+//       NOP cleanly if U_FAILURE.
-+//       Set U_REGEX_INTERNAL_ERROR on bad operands.
-+
-+int32_t URX_BUILD(int32_t type, int32_t val) {
-+    if (type < 0 || type > 255) {
-+        U_ASSERT(FALSE);
-+        type = URX_RESERVED_OP;
-+    }
-+    if (val > 0x00ffffff) {
-+        U_ASSERT(FALSE);
-+        val = 0;
-+    }
-+    return (type << 24) | val;
-+}
-+
-+
- U_NAMESPACE_END
- 
- #endif
-Index: source/i18n/regeximp.h
-===================================================================
---- source/i18n/regeximp.h	(revision 292709)
-+++ source/i18n/regeximp.h	(working copy)
-@@ -254,7 +254,7 @@
- //
- //  Convenience macros for assembling and disassembling a compiled operation.
- //
--#define URX_BUILD(type, val) (int32_t)((type << 24) | (val))
-+int32_t URX_BUILD(int32_t val, int32_t type);
- #define URX_TYPE(x)          ((uint32_t)(x) >> 24)
- #define URX_VAL(x)           ((x) & 0xffffff)
- 
-Index: source/test/intltest/regextst.cpp
-===================================================================
---- source/test/intltest/regextst.cpp	(revision 292709)
-+++ source/test/intltest/regextst.cpp	(working copy)
-@@ -131,6 +131,9 @@
-         case 21: name = "Bug 9283";
-             if (exec) Bug9283();
-             break;
-+        case 22: name = "TestBug11371";
-+            if (exec) TestBug11371();
-+            break;
- 
-         default: name = "";
-             break; //needed to end loop
-@@ -5229,5 +5232,47 @@
-   }
- }
- 
-+void RegexTest::TestBug11371() {
-+    UErrorCode status = U_ZERO_ERROR;
-+    UnicodeString patternString;
-+
-+    for (int i=0; i<8000000; i++) {
-+        patternString.append(UnicodeString("()"));
-+    }
-+    LocalPointer<RegexPattern> compiledPat(RegexPattern::compile(patternString, 0, status));
-+    if (status != U_REGEX_PATTERN_TOO_BIG) {
-+        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-+              __FILE__, __LINE__, u_errorName(status));
-+    }
-+
-+    status = U_ZERO_ERROR;
-+    patternString = "(";
-+    for (int i=0; i<20000000; i++) {
-+        patternString.append(UnicodeString("A++"));
-+    }
-+    patternString.append(UnicodeString("){0}B++"));
-+    LocalPointer<RegexPattern> compiledPat2(RegexPattern::compile(patternString, 0, status));
-+    if (status != U_REGEX_PATTERN_TOO_BIG) {
-+        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-+              __FILE__, __LINE__, u_errorName(status));
-+    }
-+
-+    // Pattern with too much string data, such that string indexes overflow operand data.
-+    status = U_ZERO_ERROR;
-+    patternString = "";
-+    while (patternString.length() < 0x00ffffff) {
-+        patternString.append(UnicodeString("stuff and things dont you know, these are a few of my favorite strings\n"));
-+    }
-+    patternString.append(UnicodeString("X? trailing string"));
-+    LocalPointer<RegexPattern> compiledPat3(RegexPattern::compile(patternString, 0, status));
-+    compiledPat3->dumpPattern();
-+    if (status != U_REGEX_PATTERN_TOO_BIG) {
-+        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-+              __FILE__, __LINE__, u_errorName(status));
-+    }
-+
-+
-+
-+}
-+
- #endif  /* !UCONFIG_NO_REGULAR_EXPRESSIONS  */
--
-Index: source/test/intltest/regextst.h
-===================================================================
---- source/test/intltest/regextst.h	(revision 292709)
-+++ source/test/intltest/regextst.h	(working copy)
-@@ -47,6 +47,7 @@
-     virtual void Bug7029();
-     virtual void Bug9283();
-     virtual void CheckInvBufSize();
-+    virtual void TestBug11371();
-     
-     // The following functions are internal to the regexp tests.
-     virtual void assertUText(const char *expected, UText *actual, const char *file, int line);
diff --git a/source/common/unicode/utypes.h b/source/common/unicode/utypes.h
index a53aafa..0cf78da 100644
--- a/source/common/unicode/utypes.h
+++ b/source/common/unicode/utypes.h
@@ -647,7 +647,6 @@
     U_REGEX_STACK_OVERFLOW,               /**< Regular expression backtrack stack overflow.       */
     U_REGEX_TIME_OUT,                     /**< Maximum allowed match time exceeded                */
     U_REGEX_STOPPED_BY_CALLER,            /**< Matching operation aborted by user callback fn.    */
-    U_REGEX_PATTERN_TOO_BIG,              /**< Pattern exceeds limits on size or complexity.      */
     U_REGEX_ERROR_LIMIT,                  /**< This must always be the last value to indicate the limit for regexp errors */
 
     /*
diff --git a/source/common/utypes.c b/source/common/utypes.c
index a5cadaf..c28e727 100644
--- a/source/common/utypes.c
+++ b/source/common/utypes.c
@@ -165,8 +165,7 @@
     "U_REGEX_INVALID_RANGE",
     "U_REGEX_STACK_OVERFLOW",
     "U_REGEX_TIME_OUT",
-    "U_REGEX_STOPPED_BY_CALLER",
-    "U_REGEX_PATTERN_TOO_BIG"
+    "U_REGEX_STOPPED_BY_CALLER"
 };
 
 static const char * const
diff --git a/source/i18n/regexcmp.cpp b/source/i18n/regexcmp.cpp
index afad2bd..8f1504f 100644
--- a/source/i18n/regexcmp.cpp
+++ b/source/i18n/regexcmp.cpp
@@ -302,7 +302,7 @@
     //   present in the saved state:  the input string position (int64_t) and
     //   the position in the compiled pattern.
     //
-    allocateStackData(RESTACKFRAME_HDRCOUNT);
+    fRXPat->fFrameSize+=RESTACKFRAME_HDRCOUNT;
 
     //
     // Optimization pass 1: NOPs, back-references, and case-folding
@@ -368,9 +368,9 @@
         //                    the start of an ( grouping.
         //4   NOP             Resreved, will be replaced by a save if there are
         //                    OR | operators at the top level
-        appendOp(URX_BUILD(URX_STATE_SAVE, 2));
-        appendOp(URX_BUILD(URX_JMP,  3));
-        appendOp(URX_BUILD(URX_FAIL, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_STATE_SAVE, 2), *fStatus);
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_JMP,  3), *fStatus);
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_FAIL, 0), *fStatus);
 
         // Standard open nonCapture paren action emits the two NOPs and
         //   sets up the paren stack frame.
@@ -393,7 +393,7 @@
         }
 
         // add the END operation to the compiled pattern.
-        appendOp(URX_BUILD(URX_END, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_END, 0), *fStatus);
 
         // Terminate the pattern compilation state machine.
         returnVal = FALSE;
@@ -422,7 +422,7 @@
             //  the JMP will eventually be the location following the ')' for the
             //  group.  This will be patched in later, when the ')' is encountered.
             op = URX_BUILD(URX_JMP, 0);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Push the position of the newly added JMP op onto the parentheses stack.
             // This registers if for fixup when this block's close paren is encountered.
@@ -431,7 +431,7 @@
             // Append a NOP to the compiled pattern.  This is the slot reserved
             //   for a SAVE in the event that there is yet another '|' following
             //   this one.
-            appendOp(URX_BUILD(URX_NOP, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
             fParenStack.push(fRXPat->fCompiledPat->size()-1, *fStatus);
         }
         break;
@@ -457,11 +457,12 @@
         //      END_CAPTURE is encountered.
         {
             fixLiterals();
-            appendOp(URX_BUILD(URX_NOP, 0));
-            int32_t  varsLoc = allocateStackData(3);    // Reserve three slots in match stack frame.
-            int32_t  cop     = URX_BUILD(URX_START_CAPTURE, varsLoc);
-            appendOp(cop);
-            appendOp(URX_BUILD(URX_NOP, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
+            int32_t  varsLoc    = fRXPat->fFrameSize;    // Reserve three slots in match stack frame.
+            fRXPat->fFrameSize += 3;
+            int32_t  cop        = URX_BUILD(URX_START_CAPTURE, varsLoc);
+            fRXPat->fCompiledPat->addElement(cop, *fStatus);
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the two NOPs.  Depending on what follows in the pattern, the
@@ -486,8 +487,8 @@
         //             is an '|' alternation within the parens.
         {
             fixLiterals();
-            appendOp(URX_BUILD(URX_NOP, 0));
-            appendOp(URX_BUILD(URX_NOP, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the two NOPs.
@@ -509,11 +510,12 @@
         //             is an '|' alternation within the parens.
         {
             fixLiterals();
-            appendOp(URX_BUILD(URX_NOP, 0));
-            int32_t  varLoc = allocateData(1);    // Reserve a data location for saving the state stack ptr.
-            int32_t  stoOp = URX_BUILD(URX_STO_SP, varLoc);
-            appendOp(stoOp);
-            appendOp(URX_BUILD(URX_NOP, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
+            int32_t  varLoc    = fRXPat->fDataSize;    // Reserve a data location for saving the
+            fRXPat->fDataSize += 1;                    //  state stack ptr.
+            int32_t  stoOp     = URX_BUILD(URX_STO_SP, varLoc);
+            fRXPat->fCompiledPat->addElement(stoOp, *fStatus);
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the two NOPs.  Depending on what follows in the pattern, the
@@ -556,25 +558,26 @@
         //  Two data slots are reserved, for saving the stack ptr and the input position.
         {
             fixLiterals();
-            int32_t dataLoc = allocateData(2);
+            int32_t dataLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize += 2;
             int32_t op = URX_BUILD(URX_LA_START, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+ 2);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             op = URX_BUILD(URX_JMP, fRXPat->fCompiledPat->size()+ 3);
-            appendOp(op);
-
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            
             op = URX_BUILD(URX_LA_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             op = URX_BUILD(URX_BACKTRACK, 0);
-            appendOp(op);
-
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            
             op = URX_BUILD(URX_NOP, 0);
-            appendOp(op);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the NOPs.
@@ -599,15 +602,16 @@
         //                                        an alternate (transparent) region.
         {
             fixLiterals();
-            int32_t dataLoc = allocateData(2);
+            int32_t dataLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize += 2;
             int32_t op = URX_BUILD(URX_LA_START, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             op = URX_BUILD(URX_STATE_SAVE, 0);    // dest address will be patched later.
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             op = URX_BUILD(URX_NOP, 0);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the StateSave and NOP.
@@ -645,22 +649,23 @@
             fixLiterals();
 
             // Allocate data space
-            int32_t dataLoc = allocateData(4);
+            int32_t dataLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize += 4;
 
             // Emit URX_LB_START
             int32_t op = URX_BUILD(URX_LB_START, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Emit URX_LB_CONT
             op = URX_BUILD(URX_LB_CONT, dataLoc);
-            appendOp(op);
-            appendOp(0);    // MinMatchLength.  To be filled later.
-            appendOp(0);    // MaxMatchLength.  To be filled later.
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MinMatchLength.  To be filled later.
+            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MaxMatchLength.  To be filled later.
 
             // Emit the NOP
             op = URX_BUILD(URX_NOP, 0);
-            appendOp(op);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the URX_LB_CONT and the NOP.
@@ -700,23 +705,24 @@
             fixLiterals();
 
             // Allocate data space
-            int32_t dataLoc = allocateData(4);
+            int32_t dataLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize += 4;
 
             // Emit URX_LB_START
             int32_t op = URX_BUILD(URX_LB_START, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Emit URX_LBN_CONT
             op = URX_BUILD(URX_LBN_CONT, dataLoc);
-            appendOp(op);
-            appendOp(0);    // MinMatchLength.  To be filled later.
-            appendOp(0);    // MaxMatchLength.  To be filled later.
-            appendOp(0);    // Continue Loc.    To be filled later.
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MinMatchLength.  To be filled later.
+            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // MaxMatchLength.  To be filled later.
+            fRXPat->fCompiledPat->addElement(0,  *fStatus);    // Continue Loc.    To be filled later.
 
             // Emit the NOP
             op = URX_BUILD(URX_NOP, 0);
-            appendOp(op);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the URX_LB_CONT and the NOP.
@@ -787,10 +793,11 @@
                 if (URX_TYPE(repeatedOp) == URX_SETREF) {
                     // Emit optimized code for [char set]+
                     int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp));
-                    appendOp(loopOpI);
-                    frameLoc = allocateStackData(1);
+                    fRXPat->fCompiledPat->addElement(loopOpI, *fStatus);
+                    frameLoc = fRXPat->fFrameSize;
+                    fRXPat->fFrameSize++;
                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc);
-                    appendOp(loopOpC);
+                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
                     break;
                 }
 
@@ -806,10 +813,11 @@
                     if (fModeFlags & UREGEX_UNIX_LINES) {
                         loopOpI |= 2;
                     }
-                    appendOp(loopOpI);
-                    frameLoc = allocateStackData(1);
+                    fRXPat->fCompiledPat->addElement(loopOpI, *fStatus);
+                    frameLoc = fRXPat->fFrameSize;
+                    fRXPat->fFrameSize++;
                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, frameLoc);
-                    appendOp(loopOpC);
+                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
                     break;
                 }
 
@@ -823,17 +831,18 @@
                 // Zero length match is possible.
                 // Emit the code sequence that can handle it.
                 insertOp(topLoc);
-                frameLoc = allocateStackData(1);
+                frameLoc =  fRXPat->fFrameSize;
+                fRXPat->fFrameSize++;
 
                 int32_t op = URX_BUILD(URX_STO_INP_LOC, frameLoc);
                 fRXPat->fCompiledPat->setElementAt(op, topLoc);
 
                 op = URX_BUILD(URX_JMP_SAV_X, topLoc+1);
-                appendOp(op);
+                fRXPat->fCompiledPat->addElement(op, *fStatus);
             } else {
                 // Simpler code when the repeated body must match something non-empty
                 int32_t  jmpOp  = URX_BUILD(URX_JMP_SAV, topLoc);
-                appendOp(jmpOp);
+                fRXPat->fCompiledPat->addElement(jmpOp, *fStatus);
             }
         }
         break;
@@ -846,7 +855,7 @@
         {
             int32_t topLoc      = blockTopLoc(FALSE);
             int32_t saveStateOp = URX_BUILD(URX_STATE_SAVE, topLoc);
-            appendOp(saveStateOp);
+            fRXPat->fCompiledPat->addElement(saveStateOp, *fStatus);
         }
         break;
 
@@ -883,10 +892,10 @@
             fRXPat->fCompiledPat->setElementAt(jmp1_op, jmp1_loc);
 
             int32_t  jmp2_op  = URX_BUILD(URX_JMP, jmp2_loc+2);
-            appendOp(jmp2_op);
+            fRXPat->fCompiledPat->addElement(jmp2_op, *fStatus);
 
             int32_t  save_op  = URX_BUILD(URX_STATE_SAVE, jmp1_loc+1);
-            appendOp(save_op);
+            fRXPat->fCompiledPat->addElement(save_op, *fStatus);
         }
         break;
 
@@ -928,9 +937,10 @@
                     // Emit optimized code for a [char set]*
                     int32_t loopOpI = URX_BUILD(URX_LOOP_SR_I, URX_VAL(repeatedOp));
                     fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc);
-                    dataLoc = allocateStackData(1);
+                    dataLoc = fRXPat->fFrameSize;
+                    fRXPat->fFrameSize++;
                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc);
-                    appendOp(loopOpC);
+                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
                     break;
                 }
 
@@ -947,9 +957,10 @@
                         loopOpI |= 2;
                     }
                     fRXPat->fCompiledPat->setElementAt(loopOpI, topLoc);
-                    dataLoc = allocateStackData(1);
+                    dataLoc = fRXPat->fFrameSize;
+                    fRXPat->fFrameSize++;
                     int32_t loopOpC = URX_BUILD(URX_LOOP_C, dataLoc);
-                    appendOp(loopOpC);
+                    fRXPat->fCompiledPat->addElement(loopOpC, *fStatus);
                     break;
                 }
             }
@@ -964,7 +975,8 @@
             //    extra loop-breaking code.
             if (minMatchLength(saveStateLoc, fRXPat->fCompiledPat->size()-1) == 0) {
                 insertOp(saveStateLoc);
-                dataLoc = allocateStackData(1);
+                dataLoc =  fRXPat->fFrameSize;
+                fRXPat->fFrameSize++;
 
                 int32_t op = URX_BUILD(URX_STO_INP_LOC, dataLoc);
                 fRXPat->fCompiledPat->setElementAt(op, saveStateLoc+1);
@@ -980,7 +992,7 @@
             fRXPat->fCompiledPat->setElementAt(saveStateOp, saveStateLoc);
 
             // Append the URX_JMP_SAV or URX_JMPX operation to the compiled pattern.
-            appendOp(jmpOp);
+            fRXPat->fCompiledPat->addElement(jmpOp, *fStatus);
         }
         break;
 
@@ -997,7 +1009,7 @@
             int32_t     jmpOp   = URX_BUILD(URX_JMP, saveLoc);
             int32_t     stateSaveOp = URX_BUILD(URX_STATE_SAVE, jmpLoc+1);
             fRXPat->fCompiledPat->setElementAt(jmpOp, jmpLoc);
-            appendOp(stateSaveOp);
+            fRXPat->fCompiledPat->addElement(stateSaveOp, *fStatus);
         }
         break;
 
@@ -1066,9 +1078,9 @@
 
             // First the STO_SP before the start of the loop
             insertOp(topLoc);
-
-            int32_t  varLoc = allocateData(1);   // Reserve a data location for saving the
-            int32_t  op     = URX_BUILD(URX_STO_SP, varLoc);
+            int32_t  varLoc    = fRXPat->fDataSize;    // Reserve a data location for saving the
+            fRXPat->fDataSize += 1;                    //  state stack ptr.
+            int32_t  op        = URX_BUILD(URX_STO_SP, varLoc);
             fRXPat->fCompiledPat->setElementAt(op, topLoc);
 
             int32_t loopOp = (int32_t)fRXPat->fCompiledPat->popi();
@@ -1078,7 +1090,7 @@
 
             // Then the LD_SP after the end of the loop
             op = URX_BUILD(URX_LD_SP, varLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
 
         break;
@@ -1122,7 +1134,7 @@
             } else {
                 op = URX_BUILD(URX_DOTANY, 0);
             }
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -1139,7 +1151,7 @@
             } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) {
                 op = URX_CARET_M_UNIX;
             }
-            appendOp(URX_BUILD(op, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
         }
         break;
 
@@ -1156,13 +1168,13 @@
             } else if ((fModeFlags & UREGEX_MULTILINE) != 0 && (fModeFlags & UREGEX_UNIX_LINES) != 0) {
                 op = URX_DOLLAR_MD;
             }
-            appendOp(URX_BUILD(op, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
         }
         break;
 
     case doBackslashA:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_CARET, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_CARET, 0), *fStatus);
         break;
 
     case doBackslashB:
@@ -1174,7 +1186,7 @@
             #endif
             fixLiterals(FALSE);
             int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B;
-            appendOp(URX_BUILD(op, 1));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 1), *fStatus);
         }
         break;
 
@@ -1187,59 +1199,63 @@
             #endif
             fixLiterals(FALSE);
             int32_t op = (fModeFlags & UREGEX_UWORD)? URX_BACKSLASH_BU : URX_BACKSLASH_B;
-            appendOp(URX_BUILD(op, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(op, 0), *fStatus);
         }
         break;
 
     case doBackslashD:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_BACKSLASH_D, 1));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 1), *fStatus);
         break;
 
     case doBackslashd:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_BACKSLASH_D, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_D, 0), *fStatus);
         break;
 
     case doBackslashG:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_BACKSLASH_G, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_G, 0), *fStatus);
         break;
 
     case doBackslashS:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_STAT_SETREF_N, URX_ISSPACE_SET));
+        fRXPat->fCompiledPat->addElement(
+            URX_BUILD(URX_STAT_SETREF_N, URX_ISSPACE_SET), *fStatus);
         break;
 
     case doBackslashs:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_STATIC_SETREF, URX_ISSPACE_SET));
+        fRXPat->fCompiledPat->addElement(
+            URX_BUILD(URX_STATIC_SETREF, URX_ISSPACE_SET), *fStatus);
         break;
 
     case doBackslashW:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_STAT_SETREF_N, URX_ISWORD_SET));
+        fRXPat->fCompiledPat->addElement(
+            URX_BUILD(URX_STAT_SETREF_N, URX_ISWORD_SET), *fStatus);
         break;
 
     case doBackslashw:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_STATIC_SETREF, URX_ISWORD_SET));
+        fRXPat->fCompiledPat->addElement(
+            URX_BUILD(URX_STATIC_SETREF, URX_ISWORD_SET), *fStatus);
         break;
 
     case doBackslashX:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_BACKSLASH_X, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_X, 0), *fStatus);
         break;
 
 
     case doBackslashZ:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_DOLLAR, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_DOLLAR, 0), *fStatus);
         break;
 
     case doBackslashz:
         fixLiterals(FALSE);
-        appendOp(URX_BUILD(URX_BACKSLASH_Z, 0));
+        fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKSLASH_Z, 0), *fStatus);
         break;
 
     case doEscapeError:
@@ -1305,7 +1321,7 @@
             } else {
                 op = URX_BUILD(URX_BACKREF, groupNum);
             }
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -1326,21 +1342,22 @@
         {
             // Emit the STO_SP
             int32_t   topLoc = blockTopLoc(TRUE);
-            int32_t   stoLoc = allocateData(1);  // Reserve the data location for storing save stack ptr.
+            int32_t   stoLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
             fRXPat->fCompiledPat->setElementAt(op, topLoc);
 
             // Emit the STATE_SAVE
             op = URX_BUILD(URX_STATE_SAVE, fRXPat->fCompiledPat->size()+2);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Emit the JMP
             op = URX_BUILD(URX_JMP, topLoc+1);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Emit the LD_SP
             op = URX_BUILD(URX_LD_SP, stoLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -1360,7 +1377,8 @@
             insertOp(topLoc);
 
             // emit   STO_SP     loc
-            int32_t   stoLoc = allocateData(1);    // Reserve the data location for storing save stack ptr.
+            int32_t   stoLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
             fRXPat->fCompiledPat->setElementAt(op, topLoc);
 
@@ -1371,11 +1389,11 @@
 
             // Append the JMP operation.
             op = URX_BUILD(URX_JMP, topLoc+1);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Emit the LD_SP       loc
             op = URX_BUILD(URX_LD_SP, stoLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -1394,7 +1412,8 @@
             insertOp(topLoc);
 
             // Emit the STO_SP
-            int32_t   stoLoc = allocateData(1);   // Reserve the data location for storing save stack ptr.
+            int32_t   stoLoc = fRXPat->fDataSize;
+            fRXPat->fDataSize++;       // Reserve the data location for storing save stack ptr.
             int32_t   op     = URX_BUILD(URX_STO_SP, stoLoc);
             fRXPat->fCompiledPat->setElementAt(op, topLoc);
 
@@ -1405,7 +1424,7 @@
 
             // Emit the LD_SP
             op = URX_BUILD(URX_LD_SP, stoLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -1462,8 +1481,8 @@
         //             is an '|' alternation within the parens.
         {
             fixLiterals(FALSE);
-            appendOp(URX_BUILD(URX_NOP, 0));
-            appendOp(URX_BUILD(URX_NOP, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_NOP, 0), *fStatus);
 
             // On the Parentheses stack, start a new frame and add the postions
             //   of the two NOPs (a normal non-capturing () frame, except for the
@@ -1843,7 +1862,7 @@
         } else {
             op = URX_BUILD(URX_ONECHAR, lastCodePoint);
         }
-        appendOp(op);
+        fRXPat->fCompiledPat->addElement(op, *fStatus);
     } else {
         // Two or more chars, emit a URX_STRING to match them.
         if (fModeFlags & UREGEX_CASE_INSENSITIVE) {
@@ -1853,39 +1872,20 @@
             //             into two single char ops, for efficiency.
             op = URX_BUILD(URX_STRING, fRXPat->fLiteralText.length());
         }
-        appendOp(op);
+        fRXPat->fCompiledPat->addElement(op, *fStatus);
         op = URX_BUILD(URX_STRING_LEN, fLiteralChars.length());
-        appendOp(op);
-
+        fRXPat->fCompiledPat->addElement(op, *fStatus);
+        
         // Add this string into the accumulated strings of the compiled pattern.
-        // The total size of the accumulated strings must be restricted to 24 bits because
-        // string indexes appear as compiled pattern operand values.
-        // This is the only place that the pattern.fLiteralText string is modified.
-
         fRXPat->fLiteralText.append(fLiteralChars);
-        if (U_SUCCESS(*fStatus) && fRXPat->fLiteralText.length() > 0x00ffffff) {
-            *fStatus = U_REGEX_PATTERN_TOO_BIG;
-        }
     }
 
     fLiteralChars.remove();
 }
 
 
-//------------------------------------------------------------------------------
-//
-//   appendOp()             Append a new instruction onto the compiled pattern
-//                          Includes error checking, limiting the size of the
-//                          pattern to lengths that can be represented in the
-//                          24 bit operand field of an instruction.
-//
-//------------------------------------------------------------------------------
-void RegexCompile::appendOp(int32_t op) {
-    fRXPat->fCompiledPat->addElement(op, *fStatus);
-    if ((fRXPat->fCompiledPat->size() > 0x00fffff0) && U_SUCCESS(*fStatus)) {
-        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-    }
-}
+
+
 
 
 //------------------------------------------------------------------------------
@@ -1947,58 +1947,6 @@
 }
 
 
-//------------------------------------------------------------------------------
-//
-//   allocateData()        Allocate storage in the matcher's static data area.
-//                         Return the index for the newly allocated data.
-//                         The storage won't actually exist until we are running a match
-//                         operation, but the storage indexes are inserted into various
-//                         opcodes while compiling the pattern.
-//
-//------------------------------------------------------------------------------
-int32_t RegexCompile::allocateData(int32_t size) {
-    if (U_FAILURE(*fStatus)) {
-        return 0;
-    }
-    if (size <= 0 || size > 0x100 || fRXPat->fDataSize < 0) {
-        *fStatus = U_REGEX_INTERNAL_ERROR;
-        return 0;
-    }
-    int32_t dataIndex = fRXPat->fDataSize;
-    fRXPat->fDataSize += size;
-    if (fRXPat->fDataSize >= 0x00fffff0) {
-        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-    }
-    return dataIndex;
-}
-
-
-//------------------------------------------------------------------------------
-//
-//   allocateStackData()   Allocate space in the back-tracking stack frame.
-//                         Return the index for the newly allocated data.
-//                         The frame indexes are inserted into various
-//                         opcodes while compiling the pattern, meaning that frame
-//                         size must be restricted to the size that will fit
-//                         as an operand (24 bits).
-//
-//------------------------------------------------------------------------------
-int32_t RegexCompile::allocateStackData(int32_t size) {
-    if (U_FAILURE(*fStatus)) {
-        return 0;
-    }
-    if (size <= 0 || size > 0x100 || fRXPat->fFrameSize < 0) {
-        *fStatus = U_REGEX_INTERNAL_ERROR;
-        return 0;
-    }
-    int32_t dataIndex = fRXPat->fFrameSize;
-    fRXPat->fFrameSize += size;
-    if (fRXPat->fFrameSize >= 0x00fffff0) {
-        *fStatus = U_REGEX_PATTERN_TOO_BIG;
-    }
-    return dataIndex;
-}
-
 
 //------------------------------------------------------------------------------
 //
@@ -2117,7 +2065,7 @@
 
             int32_t   frameVarLocation = URX_VAL(captureOp);
             int32_t   endCaptureOp = URX_BUILD(URX_END_CAPTURE, frameVarLocation);
-            appendOp(endCaptureOp);
+            fRXPat->fCompiledPat->addElement(endCaptureOp, *fStatus);
         }
         break;
     case atomic:
@@ -2129,7 +2077,7 @@
             U_ASSERT(URX_TYPE(stoOp) == URX_STO_SP);
             int32_t   stoLoc = URX_VAL(stoOp);
             int32_t   ldOp   = URX_BUILD(URX_LD_SP, stoLoc);
-            appendOp(ldOp);
+            fRXPat->fCompiledPat->addElement(ldOp, *fStatus);
         }
         break;
 
@@ -2139,7 +2087,7 @@
             U_ASSERT(URX_TYPE(startOp) == URX_LA_START);
             int32_t dataLoc  = URX_VAL(startOp);
             int32_t op       = URX_BUILD(URX_LA_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
         }
         break;
 
@@ -2150,11 +2098,11 @@
             U_ASSERT(URX_TYPE(startOp) == URX_LA_START);
             int32_t dataLoc  = URX_VAL(startOp);
             int32_t op       = URX_BUILD(URX_LA_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
             op               = URX_BUILD(URX_BACKTRACK, 0);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
             op               = URX_BUILD(URX_LA_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Patch the URX_SAVE near the top of the block.
             // The destination of the SAVE is the final LA_END that was just added.
@@ -2175,9 +2123,9 @@
             U_ASSERT(URX_TYPE(startOp) == URX_LB_START);
             int32_t dataLoc  = URX_VAL(startOp);
             int32_t op       = URX_BUILD(URX_LB_END, dataLoc);
-            appendOp(op);
-            op = URX_BUILD(URX_LA_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
+                    op       = URX_BUILD(URX_LA_END, dataLoc);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Determine the min and max bounds for the length of the
             //  string that the pattern can match.
@@ -2214,7 +2162,7 @@
             U_ASSERT(URX_TYPE(startOp) == URX_LB_START);
             int32_t dataLoc  = URX_VAL(startOp);
             int32_t op       = URX_BUILD(URX_LBN_END, dataLoc);
-            appendOp(op);
+            fRXPat->fCompiledPat->addElement(op, *fStatus);
 
             // Determine the min and max bounds for the length of the
             //  string that the pattern can match.
@@ -2280,7 +2228,7 @@
     case 0:
         {
             // Set of no elements.   Always fails to match.
-            appendOp(URX_BUILD(URX_BACKTRACK, 0));
+            fRXPat->fCompiledPat->addElement(URX_BUILD(URX_BACKTRACK, 0), *fStatus);
             delete theSet;
         }
         break;
@@ -2302,7 +2250,7 @@
             int32_t setNumber = fRXPat->fSets->size();
             fRXPat->fSets->addElement(theSet, *fStatus);
             int32_t setOp = URX_BUILD(URX_SETREF, setNumber);
-            appendOp(setOp);
+            fRXPat->fCompiledPat->addElement(setOp, *fStatus);
         }
     }
 }
@@ -2341,8 +2289,11 @@
     //        counterLoc   -->  Loop counter
     //               +1    -->  Input index (for breaking non-progressing loops)
     //                          (Only present if unbounded upper limit on loop)
-    int32_t   dataSize = fIntervalUpper < 0 ? 2 : 1;
-    int32_t   counterLoc = allocateStackData(dataSize);
+    int32_t   counterLoc = fRXPat->fFrameSize;
+    fRXPat->fFrameSize++;
+    if (fIntervalUpper < 0) {
+        fRXPat->fFrameSize++;
+    }
 
     int32_t   op = URX_BUILD(InitOp, counterLoc);
     fRXPat->fCompiledPat->setElementAt(op, topOfBlock);
@@ -2362,7 +2313,7 @@
     // Apend the CTR_LOOP op.  The operand is the location of the CTR_INIT op.
     //   Goes at end of the block being looped over, so just append to the code so far.
     op = URX_BUILD(LoopOp, topOfBlock);
-    appendOp(op);
+    fRXPat->fCompiledPat->addElement(op, *fStatus);
 
     if ((fIntervalLow & 0xff000000) != 0 ||
         (fIntervalUpper > 0 && (fIntervalUpper & 0xff000000) != 0)) {
@@ -2429,12 +2380,12 @@
     int32_t i;
     for (i=1; i<fIntervalUpper; i++ ) {
         if (i == fIntervalLow) {
-            appendOp(saveOp);
+            fRXPat->fCompiledPat->addElement(saveOp, *fStatus);
         }
         if (i > fIntervalLow) {
-            appendOp(saveOp);
+            fRXPat->fCompiledPat->addElement(saveOp, *fStatus);
         }
-        appendOp(op);
+        fRXPat->fCompiledPat->addElement(op, *fStatus);
     }
     return TRUE;
 }
diff --git a/source/i18n/regexcmp.h b/source/i18n/regexcmp.h
index b17e6bd..5d526be 100644
--- a/source/i18n/regexcmp.h
+++ b/source/i18n/regexcmp.h
@@ -103,11 +103,6 @@
     void        fixLiterals(UBool split=FALSE);      // Generate code for pending literal characters.
     void        insertOp(int32_t where);             // Open up a slot for a new op in the
                                                      //   generated code at the specified location.
-    void        appendOp(int32_t op);                // Append a new op to the compiled pattern.
-    int32_t     allocateData(int32_t size);          // Allocate space in the matcher data area.
-                                                     //   Return index of the newly allocated data.
-    int32_t     allocateStackData(int32_t size);     // Allocate space in the match back-track stack frame.
-                                                     //   Return offset index in the frame.
     int32_t     minMatchLength(int32_t start,
                                int32_t end);
     int32_t     maxMatchLength(int32_t start,
diff --git a/source/i18n/regeximp.cpp b/source/i18n/regeximp.cpp
index 395b3fc..32df5fe 100644
--- a/source/i18n/regeximp.cpp
+++ b/source/i18n/regeximp.cpp
@@ -12,8 +12,6 @@
 
 #if !UCONFIG_NO_REGULAR_EXPRESSIONS
 #include "regeximp.h"
-
-#include "uassert.h"
 #include "unicode/utf16.h"
 
 U_NAMESPACE_BEGIN
@@ -115,26 +113,6 @@
     return fIndex;
 }
 
-// Assemble a pcode instruction from the opcode and operand values.
-// Out-of-range values should not occur - if they do it is from an internal
-// error in the regex compiler. 
-
-// TODO: move into regexcmp, where it has access to fStatus.
-//       NOP cleanly if U_FAILURE.
-//       Set U_REGEX_INTERNAL_ERROR on bad operands.
-
-int32_t URX_BUILD(int32_t type, int32_t val) {
-    if (type < 0 || type > 255) {
-        U_ASSERT(FALSE);
-        type = URX_RESERVED_OP;
-    }
-    if (val > 0x00ffffff) {
-        U_ASSERT(FALSE);
-        val = 0;
-    }
-    return (type << 24) | val;
-}
-
 
 U_NAMESPACE_END
 
diff --git a/source/i18n/regeximp.h b/source/i18n/regeximp.h
index 00da653..31d333c 100644
--- a/source/i18n/regeximp.h
+++ b/source/i18n/regeximp.h
@@ -254,7 +254,7 @@
 //
 //  Convenience macros for assembling and disassembling a compiled operation.
 //
-int32_t URX_BUILD(int32_t val, int32_t type);
+#define URX_BUILD(type, val) (int32_t)((type << 24) | (val))
 #define URX_TYPE(x)          ((uint32_t)(x) >> 24)
 #define URX_VAL(x)           ((x) & 0xffffff)
 
diff --git a/source/test/intltest/regextst.cpp b/source/test/intltest/regextst.cpp
index 9fd9f43..8e750c9 100644
--- a/source/test/intltest/regextst.cpp
+++ b/source/test/intltest/regextst.cpp
@@ -131,9 +131,6 @@
         case 21: name = "Bug 9283";
             if (exec) Bug9283();
             break;
-        case 22: name = "TestBug11371";
-            if (exec) TestBug11371();
-            break;
 
         default: name = "";
             break; //needed to end loop
@@ -5232,47 +5229,5 @@
   }
 }
 
-void RegexTest::TestBug11371() {
-    UErrorCode status = U_ZERO_ERROR;
-    UnicodeString patternString;
-
-    for (int i=0; i<8000000; i++) {
-        patternString.append(UnicodeString("()"));
-    }
-    LocalPointer<RegexPattern> compiledPat(RegexPattern::compile(patternString, 0, status));
-    if (status != U_REGEX_PATTERN_TOO_BIG) {
-        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-              __FILE__, __LINE__, u_errorName(status));
-    }
-
-    status = U_ZERO_ERROR;
-    patternString = "(";
-    for (int i=0; i<20000000; i++) {
-        patternString.append(UnicodeString("A++"));
-    }
-    patternString.append(UnicodeString("){0}B++"));
-    LocalPointer<RegexPattern> compiledPat2(RegexPattern::compile(patternString, 0, status));
-    if (status != U_REGEX_PATTERN_TOO_BIG) {
-        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-              __FILE__, __LINE__, u_errorName(status));
-    }
-
-    // Pattern with too much string data, such that string indexes overflow operand data.
-    status = U_ZERO_ERROR;
-    patternString = "";
-    while (patternString.length() < 0x00ffffff) {
-        patternString.append(UnicodeString("stuff and things dont you know, these are a few of my favorite strings\n"));
-    }
-    patternString.append(UnicodeString("X? trailing string"));
-    LocalPointer<RegexPattern> compiledPat3(RegexPattern::compile(patternString, 0, status));
-    compiledPat3->dumpPattern();
-    if (status != U_REGEX_PATTERN_TOO_BIG) {
-        errln("File %s, line %d expected status=U_REGEX_PATTERN_TOO_BIG; got %s.",
-              __FILE__, __LINE__, u_errorName(status));
-    }
-
-
-
-}
-
 #endif  /* !UCONFIG_NO_REGULAR_EXPRESSIONS  */
+
diff --git a/source/test/intltest/regextst.h b/source/test/intltest/regextst.h
index de3af29..22a77ea 100644
--- a/source/test/intltest/regextst.h
+++ b/source/test/intltest/regextst.h
@@ -47,7 +47,6 @@
     virtual void Bug7029();
     virtual void Bug9283();
     virtual void CheckInvBufSize();
-    virtual void TestBug11371();
     
     // The following functions are internal to the regexp tests.
     virtual void assertUText(const char *expected, UText *actual, const char *file, int line);