[PATCH] D65370: libcxx: Define __STDCPP_THREADS__ to 1, not to __cplusplus.

[Eric Fiselier via Phabricator via llvm-commits]

EricWF added inline comments.


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Comment at: libcxx/include/thread:17
 
-#define __STDCPP_THREADS__ __cplusplus
+#define __STDCPP_THREADS__ 1
 
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This doesn't actually appear in the header synopsis, since it's supposed to be predefined by the compiler.
And if it's supposed to be predefined, I think `__config` may be a more appropriate place for it to live.


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Comment at: libcxx/include/thread:110
 
-#define __STDCPP_THREADS__ __cplusplus
+#define __STDCPP_THREADS__ 1
 
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This should be defined by the compiler, not the library. So we should only define it if it hasn't already been defined.


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Comment at: libcxx/test/std/thread/macro.pass.cpp:21
 {
 #ifndef __STDCPP_THREADS__
 #error __STDCPP_THREADS__ is not defined
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Can you add a test that it's defined to `1` specifically?


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  https://reviews.llvm.org/D65370/new/

https://reviews.llvm.org/D65370