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authorChristian Grothoff <christian@grothoff.org>2015-07-15 13:17:09 +0000
committerChristian Grothoff <christian@grothoff.org>2015-07-15 13:17:09 +0000
commit07d2afe861142b47025207c1834225932ba6e690 (patch)
treef70900fd055f48327925309c7806f2247bed7e16 /m4
parent3a85392fefd67dc0d3e3ab85be73a8fa1a99049f (diff)
-downgrade version requirement further
Diffstat (limited to 'm4')
-rw-r--r--m4/extern-inline.m445
1 files changed, 8 insertions, 37 deletions
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index 7f1bb397c..c4c5e7f22 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -1,6 +1,6 @@
dnl 'extern inline' a la ISO C99.
-dnl Copyright 2012-2014 Free Software Foundation, Inc.
+dnl Copyright 2012-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -19,56 +19,27 @@ AC_DEFUN([gl_EXTERN_INLINE],
'reference to static identifier "f" in extern inline function'.
This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
- Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
- on configurations that mistakenly use 'static inline' to implement
- functions or macros in standard C headers like <ctype.h>. For example,
- if isdigit is mistakenly implemented via a static inline function,
- a program containing an extern inline function that calls isdigit
- may not work since the C standard prohibits extern inline functions
- from calling static functions. This bug is known to occur on:
-
- OS X 10.8 and earlier; see:
- http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html
-
- DragonFly; see
- http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log
-
- FreeBSD; see:
- http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00104.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>.
- Assume DragonFly and FreeBSD will be similar. */
-#if (((defined __APPLE__ && defined __MACH__) \
- || defined __DragonFly__ || defined __FreeBSD__) \
- && (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_STDHEADER_BUG
-#endif
+ Suppress the use of extern inline on Apple's platforms, as Libc at least
+ through Libc-825.26 (2013-04-09) is incompatible with it; see, e.g.,
+ <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
+ Perhaps Apple will fix this some day. */
#if ((__GNUC__ \
? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
: (199901L <= __STDC_VERSION__ \
&& !defined __HP_cc \
&& !(defined __SUNPRO_C && __STDC__))) \
- && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+ && !defined __APPLE__)
# define _GL_INLINE inline
# define _GL_EXTERN_INLINE extern inline
-# define _GL_EXTERN_INLINE_IN_USE
#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
- && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
-# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+ && !defined __APPLE__)
+# if __GNUC_GNU_INLINE__
/* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
# else
# define _GL_INLINE extern inline
# endif
# define _GL_EXTERN_INLINE extern
-# define _GL_EXTERN_INLINE_IN_USE
#else
# define _GL_INLINE static _GL_UNUSED
# define _GL_EXTERN_INLINE static _GL_UNUSED