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[Bug c/50624] New: detecting array overflows regressed
- From: "andi-gcc at firstfloor dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 05 Oct 2011 18:23:20 +0000
- Subject: [Bug c/50624] New: detecting array overflows regressed
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50624
Bug #: 50624
Summary: detecting array overflows regressed
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: andi-gcc@firstfloor.org
Created attachment 25424
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25424
overflow tester
The attached program tests 5 different array overflows that the compiler
should be able to detect at compile time.
gcc 4.5 detects 2 out of 5 with -O2 -Wall:
overflow.c:14:7: warning: array subscript is above array bounds
overflow.c:22:12: warning: array subscript is above array bounds
Current mainline detects zero.
gcc version 4.7.0 20111002 (experimental) (GCC)