[libc++] Disable failing C11 feature tests for <cfloat> and <float.h>

Summary:
Those tests are breaking the test bots. A Bugzilla has been filed to
make sure those tests are re-enabled: https://bugs.llvm.org/show_bug.cgi?id=38572

Reviewers: mclow.lists, EricWF

Subscribers: krytarowski, christof, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D50748

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@339742 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/std/depr/depr.c.headers/float_h.pass.cpp b/test/std/depr/depr.c.headers/float_h.pass.cpp
index 84f249f..84e89c4 100644
--- a/test/std/depr/depr.c.headers/float_h.pass.cpp
+++ b/test/std/depr/depr.c.headers/float_h.pass.cpp
@@ -25,7 +25,7 @@
 #error FLT_RADIX not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_HAS_SUBNORM
 #error FLT_HAS_SUBNORM not defined
 #endif
@@ -55,7 +55,7 @@
 #error DECIMAL_DIG not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_DECIMAL_DIG
 #error FLT_DECIMAL_DIG not defined
 #endif
@@ -165,7 +165,7 @@
 #error LDBL_MIN not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_TRUE_MIN
 #error FLT_TRUE_MIN not defined
 #endif
diff --git a/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp b/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp
index 5313ad3..c1e5be9 100644
--- a/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp
+++ b/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp
@@ -25,7 +25,7 @@
 #error FLT_RADIX not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_HAS_SUBNORM
 #error FLT_HAS_SUBNORM not defined
 #endif
@@ -55,7 +55,7 @@
 #error DECIMAL_DIG not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_DECIMAL_DIG
 #error FLT_DECIMAL_DIG not defined
 #endif
@@ -165,7 +165,7 @@
 #error LDBL_MIN not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && 0
 #ifndef FLT_TRUE_MIN
 #error FLT_TRUE_MIN not defined
 #endif