public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/113752] [14 Regression] warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] since r14-261-g0ef3756adf078c Date: Mon, 12 Feb 2024 10:09:36 +0000 [thread overview] Message-ID: <bug-113752-4-aYsuHSfcJW@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-113752-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113752 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Strange, it certainly does reproduce for me: char a[10256], b, *c, *g; int d, e, f; int foo (char *j) { if (__builtin_strlen (j) + __builtin_strlen (c) + __builtin_strlen (g) + 32 > 10256) return 0; __builtin_sprintf (a, "%s:%s:%d:%d:%d:%c:%s\n", j, c, d, e, f, b, g); return 1; } void bar (void) { foo ("wctype"); } /volume/tor/opt/notnfs/gcc-bisect/obj/gcc/cc1.r14-8919 -quiet -O3 -Wall pr113752.c pr113752.c: In function ‘bar’: pr113752.c:9:44: warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] 9 | __builtin_sprintf (a, "%s:%s:%d:%d:%d:%c:%s\n", j, c, d, e, f, b, g); | ^~ In function ‘foo’, inlined from ‘bar’ at pr113752.c:16:3: pr113752.c:9:3: note: ‘__builtin_sprintf’ output between 18 and 20484 bytes into a destination of size 10256 9 | __builtin_sprintf (a, "%s:%s:%d:%d:%d:%c:%s\n", j, c, d, e, f, b, g); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /volume/tor/opt/notnfs/gcc-bisect/obj/gcc/cc1.r14-260 -quiet -O3 -Wall pr113752.c /volume/tor/opt/notnfs/gcc-bisect/obj/gcc/cc1.r14-261 -quiet -O3 -Wall pr113752.c pr113752.c: In function ‘bar’: pr113752.c:9:44: warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] 9 | __builtin_sprintf (a, "%s:%s:%d:%d:%d:%c:%s\n", j, c, d, e, f, b, g); | ^~ In function ‘foo’, inlined from ‘bar’ at pr113752.c:16:3: pr113752.c:9:3: note: ‘__builtin_sprintf’ output between 18 and 20484 bytes into a destination of size 10256 9 | __builtin_sprintf (a, "%s:%s:%d:%d:%d:%c:%s\n", j, c, d, e, f, b, g); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
next prev parent reply other threads:[~2024-02-12 10:09 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-04 4:34 [Bug c/113752] New: [14 Regression] warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] hjl.tools at gmail dot com 2024-02-04 4:47 ` [Bug tree-optimization/113752] " pinskia at gcc dot gnu.org 2024-02-04 5:58 ` hjl.tools at gmail dot com 2024-02-04 6:15 ` hjl.tools at gmail dot com 2024-02-12 9:46 ` [Bug tree-optimization/113752] [14 Regression] warning: ‘%s’ directive writing up to 10218 bytes into a region of size between 0 and 10240 [-Wformat-overflow=] since r14-261-g0ef3756adf078c aldyh at gcc dot gnu.org 2024-02-12 10:09 ` jakub at gcc dot gnu.org [this message] 2024-02-12 10:23 ` jakub at gcc dot gnu.org 2024-02-12 13:52 ` hjl.tools at gmail dot com 2024-02-13 11:36 ` jakub at gcc dot gnu.org 2024-03-07 20:41 ` law at gcc dot gnu.org 2024-05-07 7:44 ` [Bug tree-optimization/113752] [14/15 " rguenth at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-113752-4-aYsuHSfcJW@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).