[Bug c/44376] New: optimiser destroys possibility of detecting overflow

2010-06-02 Thread geoff at dyalog dot com
Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: geoff at dyalog dot com GCC build triplet: x86_64-linux-gnu GCC host triplet: x86_64-linux

[Bug c/44376] optimiser destroys possibility of detecting overflow

2010-06-02 Thread geoff at dyalog dot com
--- Comment #1 from geoff at dyalog dot com 2010-06-02 11:09 --- Created an attachment (id=20807) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20807&action=view) example code to demonstrate bug extract code using "cpio -i http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44376

[Bug tree-optimization/44376] optimiser destroys possibility of detecting overflow

2010-06-02 Thread geoff at dyalog dot com
--- Comment #3 from geoff at dyalog dot com 2010-06-02 11:36 --- Subject: Re: optimiser destroys possibility of detecting overflow On 02/06/10 12:17, rguenth at gcc dot gnu dot org wrote: > --- Comment #2 from rguenth at gcc dot gnu dot org 2010-06-02 11:17 > --- &g