GCC has a nifty ability to typecheck varargs functions that follow the printf
conventions. This change uses that in HAIL_LOG. If you build with -Wall, gcc
can now give warnings about HAIL_LOG invocations where there are too many or
too few arguments, or arguments of the wrong types.
---
include/hail_log.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/hail_log.h b/include/hail_log.h
index d6794b4..ca26f22 100644
--- a/include/hail_log.h
+++ b/include/hail_log.h
@@ -4,7 +4,8 @@
#include <stdbool.h>
struct hail_log {
- void (*func)(int prio, const char *fmt, ...);
+ void (*func)(int prio, const char *fmt, ...)
+ __attribute__((format(printf,2,3)));
bool verbose;
};
--
1.6.2.5
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