This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/53385] [4.8 Regression] "Error: operand out of range" after changes for LSHIFT_EXPR in vrp.c
- From: "glisse at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 17 May 2012 21:34:23 +0000
- Subject: [Bug tree-optimization/53385] [4.8 Regression] "Error: operand out of range" after changes for LSHIFT_EXPR in vrp.c
- Auto-submitted: auto-generated
- References: <bug-53385-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53385
--- Comment #7 from Marc Glisse <glisse at gcc dot gnu.org> 2012-05-17 21:34:23 UTC ---
Created attachment 27429
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27429
patch
I believe you need something like this completely untested patch to avoid
undefined behavior without -fwrapv.