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-rw-r--r--src/sd-daemon.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/sd-daemon.h b/src/sd-daemon.h
index 2d79082aa3..20c260c40d 100644
--- a/src/sd-daemon.h
+++ b/src/sd-daemon.h
@@ -41,6 +41,12 @@ extern "C" {
* algorithms described here, if they do not want to include these two
* source files. */
+#ifdef __GNUC__
+#define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
+#else
+#define _sd_printf_attr_(a,b)
+#endif
+
/*
Log levels for usage on stderr:
@@ -170,7 +176,7 @@ int sd_notify(int unset_environment, const char *state);
* strerror(errno),
* errno);
*/
-int sd_notifyf(int unset_environment, const char *format, ...);
+int sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_(2,3);
#ifdef __cplusplus
}