http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46759
Summary: incorrect array bounds warning?
Product: gcc
Version: 4.5.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: r...@yahoo.com
Created attachment 22598
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22598
small reproducer
Linux theta.lbl.gov 2.6.35.6-48.fc14.x86_64 #1 SMP Fri Oct 22 15:36:08 UTC 2010
x86_64 x86_64 x86_64 GNU/Linux
g++ (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)
g++ -Wall -O1 ~/bounds_warning.cpp # no warning
g++ -Wall -O2 ~/bounds_warning.cpp
bounds_warning.cpp: In function 'int main()':
bounds_warning.cpp:21:14: warning: array subscript is above array bounds
I stared at this for a while but couldn't find a problem with my code.
Is there maybe a problem with the optimizer?
Unfortunately I've been unable to bootstrap the 4.5 branch or the trunk.
Could someone try out the attached reproducer against the current svn
of the branch/trunk?
