commit 16b1ac950b5fb796e4c126ce451d34d3ceefe155
author Duncan P. N. Exon Smith <dexonsmith@apple.com> Thu Apr 27 01:47:22 2017 +0000
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> Thu Apr 27 01:47:22 2017 +0000
tree 421bc785d8b86b7b51c7660ef902b0f4112b784d
parent 8c8fb8049080bb3522c3cd8349b1d2f79c54531e

Darwin: Define __STDC_NO_THREADS__ on Darwin targets

Darwin doesn't support C11 threads.h.  Define `__STDC_NO_THREADS__` so
that users can check for it.

rdar://problem/18461003

llvm-svn: 301508

clang/lib/Basic/Targets.cpp

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index d7f1793..78b03b1 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -117,6 +117,7 @@
                              VersionTuple &PlatformMinVersion) {
   Builder.defineMacro("__APPLE_CC__", "6000");
   Builder.defineMacro("__APPLE__");
+  Builder.defineMacro("__STDC_NO_THREADS__");
   Builder.defineMacro("OBJC_NEW_PROPERTIES");
   // AddressSanitizer doesn't play well with source fortification, which is on
   // by default on Darwin.