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-rw-r--r--tests/test-utils.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/test-utils.h b/tests/test-utils.h
index fa0dc132..535172fc 100644
--- a/tests/test-utils.h
+++ b/tests/test-utils.h
@@ -8,7 +8,7 @@ void test_init (int argc, char **argv, GOptionEntry *entries);
void test_cleanup (void);
extern int debug_level, errors;
-void debug_printf (int level, const char *format, ...);
+void debug_printf (int level, const char *format, ...) G_GNUC_PRINTF (2, 3);
#ifdef HAVE_APACHE
void apache_init (void);