From 7d2382ebfacc7a3c7bdfb47994be9341beee645a Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 2 Jun 2026 08:18:53 +0200
Subject: [PATCH] tool_help: rectify a bad assert

The condition was wrong, and now it also verifies 'tlen'.

Reported-by: Gao Liyou
Ref: #21825
Closes #21837
---
 src/tool_help.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/tool_help.c b/src/tool_help.c
index 212972f382..c9d76d5d20 100644
--- a/src/tool_help.c
+++ b/src/tool_help.c
@@ -166,8 +166,9 @@ void inithelpscan(struct scan_ctx *ctx,
   ctx->flen = strlen(arg);
   ctx->endarg = endarg;
   ctx->elen = strlen(endarg);
-  DEBUGASSERT((ctx->elen < sizeof(ctx->rbuf)) ||
-              (ctx->flen < sizeof(ctx->rbuf)));
+  DEBUGASSERT((ctx->elen < sizeof(ctx->rbuf)) &&
+              (ctx->flen < sizeof(ctx->rbuf)) &&
+              (ctx->tlen < sizeof(ctx->rbuf)));
   ctx->show = 0;
   ctx->olen = 0;
   memset(ctx->rbuf, 0, sizeof(ctx->rbuf));