Remove unused BUF_reverse()

BUF_reverse() has no callers and is not part of the public API. Remove the
unused function, which also eliminates its -Wmissing-prototypes warning.

ok tb beck

1 files changed, 1 insertions, 22 deletions

diff --git a/src/lib/libcrypto/buffer/buffer.c b/src/lib/libcrypto/buffer/buffer.c
index 4a0c17c598..d6e3fa7f7f 100644
--- a/src/lib/libcrypto/buffer/buffer.c
+++ b/src/lib/libcrypto/buffer/buffer.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: buffer.c,v 1.29 2025/05/10 05:54:38 tb Exp $ */
+/* $OpenBSD: buffer.c,v 1.30 2026/07/31 01:05:27 kenjiro Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -133,24 +133,3 @@ BUF_MEM_grow_clean(BUF_MEM *str, size_t len)
         return (len);
 }
 LCRYPTO_ALIAS(BUF_MEM_grow_clean);
-
-void
-BUF_reverse(unsigned char *out, const unsigned char *in, size_t size)
-{
-        size_t i;
-
-        if (in) {
-                out += size - 1;
-                for (i = 0; i < size; i++)
-                        *out-- = *in++;
-        } else {
-                unsigned char *q;
-                char c;
-                q = out + size - 1;
-                for (i = 0; i < size / 2; i++) {
-                        c = *q;
-                        *q-- = *out;
-                        *out++ = c;
-                }
-        }
-}