diff --git a/src/backend/access/gin/test/ginpostinglist_fakes.c b/src/backend/access/gin/test/ginpostinglist_fakes.c
index c703e975dda..3861733bab6 100644
--- a/src/backend/access/gin/test/ginpostinglist_fakes.c
+++ b/src/backend/access/gin/test/ginpostinglist_fakes.c
@@ -64,4 +64,5 @@ repalloc(void *pointer, Size size)
 int
 pg_fprintf(FILE *stream, const char *fmt,...)
 {
+	return 0;
 }
diff --git a/src/backend/utils/fmgr/test/dfmgr_test.c b/src/backend/utils/fmgr/test/dfmgr_test.c
index 5246e99f496..faaa2c6e7d7 100755
--- a/src/backend/utils/fmgr/test/dfmgr_test.c
+++ b/src/backend/utils/fmgr/test/dfmgr_test.c
@@ -57,6 +57,8 @@ errmsg_impl(const char *fmt, ...)
 {
 }
 
+static void errdetail_internal_impl(const char *fmt, ...) pg_attribute_printf(1, 2);
+
 static void
 errdetail_internal_impl(const char* fmt, ...)
 {
@@ -66,6 +68,7 @@ errdetail_internal_impl(const char* fmt, ...)
     va_start(args, fmt);
 
 	appendStringInfoVA(&buf, fmt, args);
+	va_end(args);
 	strncpy(lastErrorMsg, buf.data, sizeof(lastErrorMsg) / sizeof(lastErrorMsg[0]));
 
 	pfree(buf.data);