Add format attributes to all required functions

Fixes all clang warnings with -Wformat-literal.

Also, fix genuine formating issue discovered once adding these attributes
and add a cast to prevent a gcc warning.

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/libalpm/util.h b/lib/libalpm/util.h
index 93b65730..56031f3e 100644
--- a/lib/libalpm/util.h
+++ b/lib/libalpm/util.h
@@ -120,7 +120,10 @@ int _alpm_unpack(alpm_handle_t *handle, const char *archive, const char *prefix,
 		alpm_list_t *list, int breakfirst);
 
 ssize_t _alpm_files_in_directory(alpm_handle_t *handle, const char *path, int full_count);
-int _alpm_logaction(alpm_handle_t *handle, const char *prefix, const char *fmt, va_list args);
+
+int _alpm_logaction(alpm_handle_t *handle, const char *prefix, const char *fmt, va_list args)
+	__attribute__((format(printf, 3, 0)));
+
 int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[]);
 int _alpm_ldconfig(alpm_handle_t *handle);
 int _alpm_str_cmp(const void *s1, const void *s2);