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From: "nnk at google dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/53562] New: Add -Werror= support for -D_FORTIFY_SOURCE / __builtin___memcpy_chk Date: Sat, 02 Jun 2012 09:48:00 -0000 [thread overview] Message-ID: <bug-53562-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53562 Bug #: 53562 Summary: Add -Werror= support for -D_FORTIFY_SOURCE / __builtin___memcpy_chk Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: c AssignedTo: unassigned@gcc.gnu.org ReportedBy: nnk@google.com When compiling with -D_FORTIFY_SOURCE=1, its possible for gcc to detect, at compile time, certain buffer overflows. This behavior is documented on the gcc online documentation at http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html Currently, the only way to turn these compile warnings into errors is to enable -Werror. Unfortunately, -Werror turns EVERY warning into an error, catching unrelated warnings. Can you please add a -Werror= option to error out on compile time buffer overflow problems? Perhaps -Werror=array-bounds could be reused for this? These error messages are generated in gcc/builtins.c (expand_builtin_memory_chk is one such function).
next reply other threads:[~2012-06-02 9:48 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-02 9:48 nnk at google dot com [this message] 2012-06-02 10:25 ` [Bug c/53562] " manu at gcc dot gnu.org 2014-08-21 0:09 ` manu at gcc dot gnu.org 2022-11-28 22:16 ` pinskia at gcc dot gnu.org
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