[PATCH XENSTORE v1 03/10] xenstore: check formats of trace

[Norbert Manthey <nmanthey@xxxxxxxxx>]

When passing format strings to the trace function, allow gcc to analyze
those and warn on issues.

Signed-off-by: Norbert Manthey <nmanthey@xxxxxxxxx>
Reviewed-by: Thomas Friebel <friebelt@xxxxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxxxx>

---
 tools/xenstore/xenstored_core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_core.h
--- a/tools/xenstore/xenstored_core.h
+++ b/tools/xenstore/xenstored_core.h
@@ -217,7 +217,7 @@ int delay_request(struct connection *conn, struct 
buffered_data *in,
 /* Tracing infrastructure. */
 void trace_create(const void *data, const char *type);
 void trace_destroy(const void *data, const char *type);
-void trace(const char *fmt, ...);
+void trace(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 void dtrace_io(const struct connection *conn, const struct buffered_data 
*data, int out);
 void reopen_log(void);
 void close_log(void);
-- 
2.17.1




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