X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/0877d0dc24ee792b9b14592869ea1aa0934aee58..b7e0ef72d0ac61b5d3ef06a3f565695c75ec2540:/src/regex.h

diff --git a/src/regex.h b/src/regex.h
index f1fd837bd6..bb737df523 100644
--- a/src/regex.h
+++ b/src/regex.h
@@ -528,31 +528,41 @@ extern int re_exec (const char *);
 #endif
 
 /* GCC 2.95 and later have "__restrict"; C99 compilers have
-   "restrict", and "configure" may have defined "restrict".  */
-#ifndef __restrict
-# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
-#  if defined restrict || 199901L <= __STDC_VERSION__
-#   define __restrict restrict
-#  else
-#   define __restrict
-#  endif
+   "restrict", and "configure" may have defined "restrict".
+   Other compilers use __restrict, __restrict__, and _Restrict, and
+   'configure' might #define 'restrict' to those words, so pick a
+   different name.  */
+#ifndef _Restrict_
+# if 199901L <= __STDC_VERSION__
+#  define _Restrict_ restrict
+# elif 2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)
+#  define _Restrict_ __restrict
+# else
+#  define _Restrict_
 # endif
 #endif
-/* For now conditionally define __restrict_arr to expand to nothing.
-   Ideally we would have a test for the compiler which allows defining
-   it to restrict.  */
-#ifndef __restrict_arr
-# define __restrict_arr
+/* gcc 3.1 and up support the [restrict] syntax.  Don't trust
+   sys/cdefs.h's definition of __restrict_arr, though, as it
+   mishandles gcc -ansi -pedantic.  */
+#ifndef _Restrict_arr_
+# if ((199901L <= __STDC_VERSION__					\
+       || ((3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__))	\
+	   && !defined __STRICT_ANSI__))					\
+      && !defined __GNUG__)
+#  define _Restrict_arr_ _Restrict_
+# else
+#  define _Restrict_arr_
+# endif
 #endif
 
 /* POSIX compatibility.  */
-extern reg_errcode_t regcomp (regex_t *__restrict __preg,
-			      const char *__restrict __pattern,
+extern reg_errcode_t regcomp (regex_t *_Restrict_ __preg,
+			      const char *_Restrict_ __pattern,
 			      int __cflags);
 
-extern reg_errcode_t regexec (const regex_t *__restrict __preg,
-			      const char *__restrict __string, size_t __nmatch,
-			      regmatch_t __pmatch[__restrict_arr],
+extern reg_errcode_t regexec (const regex_t *_Restrict_ __preg,
+			      const char *_Restrict_ __string, size_t __nmatch,
+			      regmatch_t __pmatch[_Restrict_arr_],
 			      int __eflags);
 
 extern size_t regerror (int __errcode, const regex_t * __preg,