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-rw-r--r--gl/tests/test-string.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gl/tests/test-string.c b/gl/tests/test-string.c
index fe53cd9b15..69df747eb6 100644
--- a/gl/tests/test-string.c
+++ b/gl/tests/test-string.c
@@ -27,7 +27,7 @@
verify (sizeof NULL == sizeof (void *));
int
-main ()
+main (void)
{
return 0;
}