summaryrefslogtreecommitdiff
path: root/include/unistd.h
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2012-09-06 22:44:55 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-06 22:44:55 -0400
commit400c5e5c8307a2ebe44ef1f203f5a15669f20347 (patch)
tree087a48dc8251fa05f6866af8ebf96b69450b15ab /include/unistd.h
parentbac03cdde1137c16b4c194e137310e2748661dcc (diff)
downloadmusl-400c5e5c8307a2ebe44ef1f203f5a15669f20347.tar.gz
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.
Diffstat (limited to 'include/unistd.h')
-rw-r--r--include/unistd.h12
1 files changed, 9 insertions, 3 deletions
diff --git a/include/unistd.h b/include/unistd.h
index 12d153b8..ecb23f81 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -5,6 +5,12 @@
extern "C" {
#endif
+#if __STDC_VERSION__ >= 199901L
+#define __restrict restrict
+#elif !defined(__GNUC__)
+#define __restrict
+#endif
+
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
@@ -52,8 +58,8 @@ int link(const char *, const char *);
int linkat(int, const char *, int, const char *, int);
int symlink(const char *, const char *);
int symlinkat(const char *, int, const char *);
-ssize_t readlink(const char *, char *, size_t);
-ssize_t readlinkat(int, const char *, char *, size_t);
+ssize_t readlink(const char *__restrict, char *__restrict, size_t);
+ssize_t readlinkat(int, const char *__restrict, char *__restrict, size_t);
int unlink(const char *);
int unlinkat(int, const char *, int);
int rmdir(const char *);
@@ -141,7 +147,7 @@ void sync(void);
pid_t setpgrp(void);
char *crypt(const char *, const char *);
void encrypt(char *, int);
-void swab(const void *, void *, ssize_t);
+void swab(const void *__restrict, void *__restrict, ssize_t);
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \