From: Nick <vincent@systemli.org>
To: elfutils-devel@sourceware.org
Subject: elfutils does not compile with gcc 12.2.0
Date: Wed, 24 Aug 2022 22:51:13 +0200 [thread overview]
Message-ID: <340e1f2d-ffd6-6b28-aa5e-3d3f3a535f07@systemli.org> (raw)
I try to compile elfutils on OpenWrt with the newest gcc 12.2.0 version.
However, it fails due to -Werror=use-after-free. A workaround is a patch
that I found on the mailinglist, to disable -Werror
(https://sourceware.org/legacy-ml/elfutils-devel/imported/msg00994.html)
I modified it to apply to newest elfutils version. The error with
elfutils 0.187 and gcc 12.2.0:
In function 'bigger_buffer',
inlined from '__libdw_gunzip' at gzip.c:376:12:
gzip.c:98:9: error: pointer may be used after 'realloc'
[-Werror=use-after-free]
98 | b = realloc (state->buffer, more -= 1024);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gzip.c:96:13: note: call to 'realloc' here
96 | char *b = realloc (state->buffer, more);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
Can you apply the patch to disable werror? Or is it necessary to use
some "#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wuse-after-free""-statement?
Bests
Nick
next reply other threads:[~2022-08-24 20:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-24 20:51 Nick [this message]
2022-08-24 21:01 ` Dmitry V. Levin
2022-08-25 8:51 ` Nick
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