[libc++] Fix _LIBCPP_EXPORTED_FROM_ABI when visibility annotations are disabled
Fixes a bug where functions would get exported when building with
-fvisibility=hidden and defining _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS. No
visibility annotations should be added in this case.
The new logic for _LIBCPP_EXPORTED_FROM_ABI matches that of the other visibility
annotations around it.
Differential Revision: https://reviews.llvm.org/D55664
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@349080 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index 88c207c..b5e7b76 100644
--- a/include/__config
+++ b/include/__config
@@ -715,7 +715,11 @@
#endif
#ifndef _LIBCPP_EXPORTED_FROM_ABI
-# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default")))
+# if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
+# define _LIBCPP_EXPORTED_FROM_ABI __attribute__((__visibility__("default")))
+# else
+# define _LIBCPP_EXPORTED_FROM_ABI
+# endif
#endif
#ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS