Add function attributes

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 35 insertions, 24 deletions

diff --git a/liberror-libc.h b/liberror-libc.h
index 108ac19..fad436b 100644
--- a/liberror-libc.h
+++ b/liberror-libc.h
@@ -7,6 +7,16 @@
 #include <unistd.h>
 
 
+#if defined(__GNUC__)
+# define _LIBERROR_GCC_ONLY(...) __VA_ARGS__
+#else
+# define _LIBERROR_GCC_ONLY(...)
+#endif
+
+#define _LIBERROR_WUR _LIBERROR_GCC_ONLY(__attribute__((__warn_unused_result__)))
+#define _LIBERROR_MALLOC _LIBERROR_GCC_ONLY(__attribute__((__malloc__)))
+
+
 #define LIBERROR_LIBC_ERRROR_SHORT_READ -1
 #define LIBERROR_LIBC_ERRROR_SHORT_SEEK -2
 #define LIBERROR_LIBC_ERRROR_SHORT_WRITE -3
@@ -16,51 +26,52 @@ typedef int64_t _liberror_off_t;
 typedef uint64_t _liberror_uoff_t;
 
 
-int liberror_abs(int);
+_LIBERROR_WUR int liberror_abs(int);
 void liberror_abs_failed(int);
-/* void *liberror_aligned_alloc(size_t, size_t); TODO */
-void *liberror_calloc(size_t, size_t);
+/* _LIBERROR_WUR _LIBERROR_MALLOC void *liberror_aligned_alloc(size_t, size_t); TODO */
+_LIBERROR_WUR _LIBERROR_MALLOC void *liberror_calloc(size_t, size_t);
 void liberror_calloc_failed(size_t, size_t);
-int liberror_chdir(const char *);
+_LIBERROR_WUR int liberror_chdir(const char *);
 void liberror_chdir_failed(const char *);
-intmax_t liberror_imaxabs(intmax_t);
+_LIBERROR_WUR intmax_t liberror_imaxabs(intmax_t);
 void liberror_imaxabs_failed(intmax_t);
-long int liberror_labs(long int);
+_LIBERROR_WUR long int liberror_labs(long int);
 void liberror_labs_failed(long int);
-long long int liberror_llabs(long long int);
+_LIBERROR_WUR long long int liberror_llabs(long long int);
 void liberror_llabs_failed(long long int);
-_liberror_off_t liberror_lseek(int, _liberror_off_t, int, const char *);
-_liberror_off_t liberror_lseek_require(int, _liberror_off_t, int, _liberror_uoff_t min, _liberror_uoff_t max, const char *);
+_LIBERROR_WUR _liberror_off_t liberror_lseek(int, _liberror_off_t, int, const char *);
+_LIBERROR_WUR _liberror_off_t liberror_lseek_require(int, _liberror_off_t, int, _liberror_uoff_t min,
+                                                     _liberror_uoff_t max, const char *);
 void liberror_lseek_failed(int, _liberror_off_t, int, const char *);
 void liberror_lseek_short(int, _liberror_off_t, int, _liberror_uoff_t min, _liberror_uoff_t max,
                           _liberror_off_t returned, const char *);
-void *liberror_malloc(size_t);
+_LIBERROR_WUR _LIBERROR_MALLOC void *liberror_malloc(size_t);
 void liberror_malloc_failed(size_t);
-int liberror_pipe(int[2]);
+_LIBERROR_WUR int liberror_pipe(int[2]);
 void liberror_pipe_failed(int[2]);
-int liberror_putenv(char *);
+_LIBERROR_WUR int liberror_putenv(char *);
 void liberror_putenv_failed(char *);
-int liberror_raise(int);
+_LIBERROR_WUR int liberror_raise(int);
 void liberror_raise_failed(int);
-void *liberror_realloc(void *, size_t);
+_LIBERROR_WUR void *liberror_realloc(void *, size_t);
 void liberror_realloc_failed(void *, size_t);
-ssize_t liberror_recv(int, void *, size_t, int, const char *);
-ssize_t liberror_recv_require(int, void *, size_t, int, size_t min, size_t max, const char *);
+_LIBERROR_WUR ssize_t liberror_recv(int, void *, size_t, int, const char *);
+_LIBERROR_WUR ssize_t liberror_recv_require(int, void *, size_t, int, size_t min, size_t max, const char *);
 void liberror_recv_failed(int, void *, size_t, int, const char *);
 void liberror_recv_short(int, void *, size_t, int, size_t min, size_t max, ssize_t returned, const char *);
-/* void *liberror_posix_memalign(void **, size_t, size_t); TODO */
-ssize_t liberror_send(int, const void *, size_t, int, const char *);
-ssize_t liberror_send_require(int, const void *, size_t, int, size_t min, size_t max, const char *);
+/* _LIBERROR_WUR void *liberror_posix_memalign(void **, size_t, size_t); TODO */
+_LIBERROR_WUR ssize_t liberror_send(int, const void *, size_t, int, const char *);
+_LIBERROR_WUR ssize_t liberror_send_require(int, const void *, size_t, int, size_t min, size_t max, const char *);
 void liberror_send_failed(int, const void *, size_t, int, const char *);
 void liberror_send_short(int, const void *, size_t, int, size_t min, size_t max, ssize_t returned, const char *);
-int liberror_setenv(const char *, const char *, int);
-int liberror_shutdown(int, int, const char *);
+_LIBERROR_WUR int liberror_setenv(const char *, const char *, int);
+_LIBERROR_WUR int liberror_shutdown(int, int, const char *);
 void liberror_shutdown_failed(int, int, const char *);
-int liberror_sockatmark(int, const char *);
+_LIBERROR_WUR int liberror_sockatmark(int, const char *);
 void liberror_sockatmark_failed(int, const char *);
-char *liberror_strdup(const char *);
+_LIBERROR_WUR _LIBERROR_MALLOC char *liberror_strdup(const char *);
 void liberror_strdup_failed(const char *);
-int liberror_unsetenv(const char *);
+_LIBERROR_WUR int liberror_unsetenv(const char *);
 void liberror_unsetenv_failed(const char *);