-[/* _GL_INLINE is a portable alternative to ISO C99 plain 'inline'.
- _GL_EXTERN_INLINE is a portable alternative to 'extern inline'.
- _GL_INLINE_HEADER_BEGIN contains useful stuff to put
- in an include file, before uses of _GL_INLINE.
- It suppresses GCC's bogus "no previous prototype for 'FOO'" diagnostic,
- when FOO is an inline function in the header; see
- <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>.
- _GL_INLINE_HEADER_END contains useful stuff to put
- in the same include file, after uses of _GL_INLINE. */
-#if __GNUC__ ? __GNUC_STDC_INLINE__ : 199901L <= __STDC_VERSION__
+[/* Please see the Gnulib manual for how to use these macros.
+
+ Suppress extern inline with HP-UX cc, as it appears to be broken; see
+ <http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>.
+
+ Suppress extern inline with Sun C in standards-conformance mode, as it
+ mishandles inline functions that call each other. E.g., for 'inline void f
+ (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+ 'reference to static identifier "f" in extern inline function'.
+ This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+
+ Suppress the use of extern inline on problematic Apple configurations.
+ OS X 10.8 and earlier mishandle it; see, e.g.,
+ <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
+ OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+ for clang but remains for g++; see <http://trac.macports.org/ticket/41033>.
+ Perhaps Apple will fix this some day. */
+#if (defined __APPLE__ \
+ && (defined __header_inline \
+ ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+ && ! defined __clang__) \
+ : ((! defined _DONT_USE_CTYPE_INLINE_ \
+ && (defined __GNUC__ || defined __cplusplus)) \
+ || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+ && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_APPLE_BUG
+#endif
+#if ((__GNUC__ \
+ ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+ : (199901L <= __STDC_VERSION__ \
+ && !defined __HP_cc \
+ && !(defined __SUNPRO_C && __STDC__))) \
+ && !defined _GL_EXTERN_INLINE_APPLE_BUG)