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-rw-r--r--lib/gl/tests/test-stdlib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/gl/tests/test-stdlib.c b/lib/gl/tests/test-stdlib.c
index ae46ba1662..fad5cf450e 100644
--- a/lib/gl/tests/test-stdlib.c
+++ b/lib/gl/tests/test-stdlib.c
@@ -29,7 +29,7 @@ int exitcode;
verify (sizeof NULL == sizeof (void *));
int
-main ()
+main (void)
{
/* Check that some macros are defined and different integer constants. */
switch (exitcode)