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, 11 insertions, 5 deletions

diff --git a/include/sys/socket.h b/include/sys/socket.h
index a384ca12..7024d232 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -4,6 +4,12 @@
 extern "C" {
 #endif
 
+#if __STDC_VERSION__ >= 199901L
+#define __restrict restrict
+#elif !defined(__GNUC__)
+#define __restrict
+#endif
+
 #define __NEED_socklen_t
 #define __NEED_sa_family_t
 #define __NEED_size_t
@@ -232,19 +238,19 @@ int shutdown (int, int);
 int bind (int, const struct sockaddr *, socklen_t);
 int connect (int, const struct sockaddr *, socklen_t);
 int listen (int, int);
-int accept (int, struct sockaddr *, socklen_t *);
+int accept (int, struct sockaddr *__restrict, socklen_t *__restrict);
 
-int getsockname (int, struct sockaddr *, socklen_t *);
-int getpeername (int, struct sockaddr *, socklen_t *);
+int getsockname (int, struct sockaddr *__restrict, socklen_t *__restrict);
+int getpeername (int, struct sockaddr *__restrict, socklen_t *__restrict);
 
 ssize_t send (int, const void *, size_t, int);
 ssize_t recv (int, void *, size_t, int);
 ssize_t sendto (int, const void *, size_t, int, const struct sockaddr *, socklen_t);
-ssize_t recvfrom (int, void *, size_t, int, struct sockaddr *, socklen_t *);
+ssize_t recvfrom (int, void *__restrict, size_t, int, struct sockaddr *__restrict, socklen_t *__restrict);
 ssize_t sendmsg (int, const struct msghdr *, int);
 ssize_t recvmsg (int, struct msghdr *, int);
 
-int getsockopt (int, int, int, void *, socklen_t *);
+int getsockopt (int, int, int, void *__restrict, socklen_t *__restrict);
 int setsockopt (int, int, int, const void *, socklen_t);
 
 int sockatmark (int);