svn commit: r320240 - head/include

[Ed Schouten]

Author: ed
Date: Thu Jun 22 18:39:52 2017
New Revision: 320240
URL: https://svnweb.freebsd.org/changeset/base/320240

Log:
  Use __ISO_C_VISIBLE, as opposed to testing __STDC_VERSION__.
  
  FreeBSD's C library uses __STDC_VERSION__ to determine whether the
  compiler provides language features specific to a certain version of the
  C standard. __ISO_C_VISIBLE is used to specify which library features
  need to be exposed.
  
  max_align_t currently uses __STDC_VERSION__, even though it should be
  using __ISO_C_VISIBLE to remain consistent with the rest of the headers
  in include/.
  
  Reviewed by:	dim
  MFC after:	1 month
  Differential Revision:	https://reviews.freebsd.org/D11303

Modified:
  head/include/stddef.h

Modified: head/include/stddef.h
==============================================================================
--- head/include/stddef.h	Thu Jun 22 17:10:34 2017	(r320239)
+++ head/include/stddef.h	Thu Jun 22 18:39:52 2017	(r320240)
@@ -62,7 +62,7 @@ typedef	___wchar_t	wchar_t;
 #endif
 #endif
 
-#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
+#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
 #ifndef __CLANG_MAX_ALIGN_T_DEFINED
 typedef	__max_align_t	max_align_t;
 #define __CLANG_MAX_ALIGN_T_DEFINED