use restrict everywhere it's required by c99 and/or posix 2008

to deal with the fact that the public headers may be used with pre-c99
compilers, __restrict is used in place of restrict, and defined
appropriately for any supported compiler. we also avoid the form
[restrict] since older versions of gcc rejected it due to a bug in the
original c99 standard, and instead use the form *restrict.

1 files changed, 9 insertions, 3 deletions

diff --git a/include/sys/stat.h b/include/sys/stat.h
index 2a7ce233..e16a9682 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -4,6 +4,12 @@
 extern "C" {
 #endif
 
+#if __STDC_VERSION__ >= 199901L
+#define __restrict restrict
+#elif !defined(__GNUC__)
+#define __restrict
+#endif
+
 #define __NEED_dev_t
 #define __NEED_ino_t
 #define __NEED_mode_t
@@ -68,10 +74,10 @@ extern "C" {
 #define UTIME_NOW  0x3fffffff
 #define UTIME_OMIT 0x3ffffffe
 
-int stat(const char *, struct stat *);
+int stat(const char *__restrict, struct stat *__restrict);
 int fstat(int, struct stat *);
-int lstat(const char *, struct stat *);
-int fstatat(int, const char *, struct stat *, int);
+int lstat(const char *__restrict, struct stat *__restrict);
+int fstatat(int, const char *__restrict, struct stat *__restrict, int);
 int chmod(const char *, mode_t);
 int fchmod(int, mode_t);
 int fchmodat(int, const char *, mode_t, int);