commit 72456f5013bcd307adcf255644bcc6e8dfe76077
author David Zarzycki <dave@znu.io> Wed Oct 18 09:04:17 2017 -0400
committer GitHub <noreply@github.com> Wed Oct 18 09:04:17 2017 -0400
tree 46d353cab9cefd36fbbf2bab7d5bd8eb86233d42
parent 90d71c3a5e140ad1240eab9c7b2cce7dfa0e9a31
parent bed0e27c78503aef1061f81de1290d218bbe9b9b

Merge pull request #12496 from davezarzycki/nfc_ExtInfo_withAPI_warn_unused_result

[AST] NFC: Warn if ExtInfo "with*" API results are unused

include/swift/AST/Types.h

diff --git a/include/swift/AST/Types.h b/include/swift/AST/Types.h
index 7a84a8d..ec14762 100644
--- a/include/swift/AST/Types.h
+++ b/include/swift/AST/Types.h
@@ -2473,22 +2473,26 @@
     
     // Note that we don't have setters. That is by design, use
     // the following with methods instead of mutating these objects.
+    LLVM_NODISCARD
     ExtInfo withRepresentation(Representation Rep) const {
       return ExtInfo((Bits & ~RepresentationMask)
                      | (unsigned)Rep);
     }
+    LLVM_NODISCARD
     ExtInfo withIsAutoClosure(bool IsAutoClosure = true) const {
       if (IsAutoClosure)
         return ExtInfo(Bits | AutoClosureMask);
       else
         return ExtInfo(Bits & ~AutoClosureMask);
     }
+    LLVM_NODISCARD
     ExtInfo withNoEscape(bool NoEscape = true) const {
       if (NoEscape)
         return ExtInfo(Bits | NoEscapeMask);
       else
         return ExtInfo(Bits & ~NoEscapeMask);
     }
+    LLVM_NODISCARD
     ExtInfo withThrows(bool Throws = true) const {
       if (Throws)
         return ExtInfo(Bits | ThrowsMask);