Add gcc format attribute to _alpm_log, catch a few bugs in the process

This fixed a few of our formatted output strings that were broken before
but never being checked.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libalpm/log.h b/lib/libalpm/log.h
index abb160d5..00fabf47 100644
--- a/lib/libalpm/log.h
+++ b/lib/libalpm/log.h
@@ -30,7 +30,7 @@
 #define ALPM_LOG_FUNC
 #endif
 
-void _alpm_log(pmloglevel_t flag, char *fmt, ...);
+void _alpm_log(pmloglevel_t flag, char *fmt, ...) __attribute__((format(printf,2,3)));
 
 #endif /* _ALPM_LOG_H */