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-rw-r--r--lib/regex.h26
1 files changed, 22 insertions, 4 deletions
diff --git a/lib/regex.h b/lib/regex.h
index 5edeff355..47f4af7b5 100644
--- a/lib/regex.h
+++ b/lib/regex.h
@@ -513,13 +513,31 @@ extern int re_exec _RE_ARGS ((const char *));
# endif
#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
+# endif
+/* For now unconditionally define __restrict_arr to expand to nothing.
+ Ideally we would have a test for the compiler which allows defining
+ it to restrict. */
+# define __restrict_arr
+#endif
+
/* POSIX compatibility. */
-extern int regcomp _RE_ARGS ((regex_t *__preg, const char *__pattern,
+extern int regcomp _RE_ARGS ((regex_t *__restrict __preg,
+ const char *__restrict __pattern,
int __cflags));
-extern int regexec _RE_ARGS ((const regex_t *__preg,
- const char *__string, size_t __nmatch,
- regmatch_t __pmatch[], int __eflags));
+extern int regexec _RE_ARGS ((const regex_t *__restrict __preg,
+ const char *__restrict __string, size_t __nmatch,
+ regmatch_t __pmatch[__restrict_arr],
+ int __eflags));
extern size_t regerror _RE_ARGS ((int __errcode, const regex_t *__preg,
char *__errbuf, size_t __errbuf_size));