X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=include%2Fust-snprintf.h;h=da932139726ab0867a5b5f93c7049863a32e87ab;hb=f574bfb4d81b26d3cfc0243868d138e33470a950;hp=37c2218c432ea0de20d5d80c88eff1d9f52f2b5d;hpb=864a1eda22ed99266509ac76451c6f27f91aa17e;p=lttng-ust.git

diff --git a/include/ust-snprintf.h b/include/ust-snprintf.h
index 37c2218c..da932139 100644
--- a/include/ust-snprintf.h
+++ b/include/ust-snprintf.h
@@ -10,7 +10,11 @@
 #include <stdarg.h>
 #include <stddef.h>
 
-extern int ust_safe_vsnprintf(char *str, size_t n, const char *fmt, va_list ap);
-extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...);
+__attribute__((visibility("hidden")))
+int ust_safe_vsnprintf(char *str, size_t n, const char *fmt, va_list ap);
+
+__attribute__((visibility("hidden")))
+int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...)
+	__attribute__ ((format (printf, 3, 4)));
 
 #endif /* UST_SNPRINTF */