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
diff --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
index 5fb2011..36ef9b2 100644
--- a/clang/test/Preprocessor/init.c
+++ b/clang/test/Preprocessor/init.c
@@ -9690,3 +9690,12 @@
// MSVC-X64-NEXT:#define __CLANG_ATOMIC_SHORT_LOCK_FREE 2
// MSVC-X64-NEXT:#define __CLANG_ATOMIC_WCHAR_T_LOCK_FREE 2
// MSVC-X86-NOT:#define __GCC_ATOMIC{{.*}}
+
+// RUN: %clang_cc1 -E -dM -ffreestanding \
+// RUN: -triple=aarch64-apple-ios9 < /dev/null \
+// RUN: | FileCheck -check-prefix=DARWIN %s
+// RUN: %clang_cc1 -E -dM -ffreestanding \
+// RUN: -triple=aarch64-apple-macosx10.12 < /dev/null \
+// RUN: | FileCheck -check-prefix=DARWIN %s
+
+// DARWIN:#define __STDC_NO_THREADS__ 1