[PATCH] D38567: [config] Warn when POSIX_C_SOURCE breaks threading support on Darwin

[Alex Lorenz via Phabricator via cfe-commits]

arphaman added inline comments.


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Comment at: include/__threading_support:26
 
+#if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && (__MAC_OS_X_VERSION_MIN_REQUIRED < 101300)) \
+    || (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && (__IPHONE_OS_VERSION_MIN_REQUIRED < 110000)) \
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Please add a brief comment that describes why the check and the warning are needed.


https://reviews.llvm.org/D38567