From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2178) id 6913E385B518; Thu, 12 Jan 2023 06:21:21 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6913E385B518 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1673504481; bh=ptcXW9lg9wbS5vB+nxLdQeHZjZ6jSga3WHah8OcsJIM=; h=From:To:Subject:Date:From; b=adpdKl9z9cLnzfPeEjL/yGT+UKL37mccY+J+bKlwpnnprsH0QzZTZixu0dO5//Y7+ eTpOStb2M6FZSNZBgJMRbeYLI2Rm3w0tsYXkNtNmb4bd3Hp4DioF+M/CC31YkROQIj afVWVs5+JbxnsiNdPjGhyPH+WHEdclk25tq6pKY8= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Florian Weimer To: glibc-cvs@sourceware.org Subject: [glibc/release/2.34/master] resolv: Avoid GCC 12 false positive warning [BZ #28439]. X-Act-Checkin: glibc X-Git-Author: Martin Sebor X-Git-Refname: refs/heads/release/2.34/master X-Git-Oldrev: d36f457870a807f6f29880a2f2bde5e9b761f00c X-Git-Newrev: 92d5c52aaac0fa8e58b92e96bf2025d6848a2845 Message-Id: <20230112062121.6913E385B518@sourceware.org> Date: Thu, 12 Jan 2023 06:21:21 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=92d5c52aaac0fa8e58b92e96bf2025d6848a2845 commit 92d5c52aaac0fa8e58b92e96bf2025d6848a2845 Author: Martin Sebor Date: Mon Oct 11 09:36:57 2021 -0600 resolv: Avoid GCC 12 false positive warning [BZ #28439]. Replace a call to sprintf with an equivalent pair of stpcpy/strcpy calls to avoid a GCC 12 -Wformat-overflow false positive due to recent optimizer improvements. (cherry picked from commit eb73b87897798de981dbbf019aa957045d768adb) Diff: --- resolv/res_query.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/resolv/res_query.c b/resolv/res_query.c index 75b0e5f2f7..5d0a68dc81 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -610,7 +610,9 @@ __res_context_querydomain (struct resolv_context *ctx, RES_SET_H_ERRNO(statp, NO_RECOVERY); return (-1); } - sprintf(nbuf, "%s.%s", name, domain); + char *p = __stpcpy (nbuf, name); + *p++ = '.'; + strcpy (p, domain); } return __res_context_query (ctx, longname, class, type, answer, anslen, answerp, answerp2, nanswerp2,