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-rw-r--r--editors/cmp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/editors/cmp.c b/editors/cmp.c
index 6dfe0401b..9189b3150 100644
--- a/editors/cmp.c
+++ b/editors/cmp.c
@@ -43,7 +43,7 @@ static const char opt_chars[] ALIGN1 = "sl";
#define CMP_OPT_l (1<<1)
int cmp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cmp_main(int argc, char **argv)
+int cmp_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
FILE *fp1, *fp2, *outfile = stdout;
const char *filename1, *filename2 = "-";