* m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.

[gnulib.git] / m4 / gnulib-common.m4

diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 843efe0..f3f0a7d 100644 (file)
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 26
+# gnulib-common.m4 serial 27
 dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,6 +12,17 @@ AC_DEFUN([gl_COMMON], [
   AC_REQUIRE([gl_COMMON_BODY])
 ])
 AC_DEFUN([gl_COMMON_BODY], [
+  AH_VERBATIM([_Noreturn],
+[/* The _Noreturn keyword of draft C1X.  */
+#if ! defined _Noreturn && __STDC_VERSION__ < 201000L
+# if (3 <= __GNUC__ || __GNUC__ == 2 && 8 <= __GNUC_MINOR__ \
+      || 0x5110 <= __SUNPRO_C)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# else
+#  define _Noreturn
+# endif
+#endif
+])
   AH_VERBATIM([isoc99_inline],
 [/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
    the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of