From dfeaa842f2015d266bd7922b89795a2007e6f497 Mon Sep 17 00:00:00 2001
From: tb <>
Date: Sun, 18 May 2025 06:41:51 +0000
Subject: bio_dump: only run strncmp if there's something to compare

---
 src/regress/lib/libcrypto/bio/bio_dump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/regress')

diff --git a/src/regress/lib/libcrypto/bio/bio_dump.c b/src/regress/lib/libcrypto/bio/bio_dump.c
index 22db80fa3d..fd2bb285fb 100644
--- a/src/regress/lib/libcrypto/bio/bio_dump.c
+++ b/src/regress/lib/libcrypto/bio/bio_dump.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bio_dump.c,v 1.4 2024/02/09 12:48:32 tb Exp $ */
+/*	$OpenBSD: bio_dump.c,v 1.5 2025/05/18 06:41:51 tb Exp $ */
 /*
  * Copyright (c) 2024 Theo Buehler <tb@openbsd.org>
  *
@@ -809,7 +809,7 @@ bio_dump_test(const struct bio_dump_testcase *tc)
 		    tc->indent, ret, got_len, strlen(tc->output));
 		goto err;
 	}
-	if (strncmp(tc->output, got, got_len) != 0) {
+	if (got_len > 0 && strncmp(tc->output, got, got_len) != 0) {
 		fprintf(stderr, "%d: mismatch\n", tc->indent);
 		goto err;
 	}
-- 
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