[Bug c/50838] New: ice in refs_may_alias_p_1 with -O3

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50838

             Bug #: 50838
           Summary: ice in refs_may_alias_p_1 with -O3
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: dcb...@hotmail.com


Created attachment 25580
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25580
gzipped C source code

I just tried to compile the package clisp-2.49-4
on latest trunk snapshot 20111022 on an AMD x86_64 box.

The compiler said

../src/spvw.d: In function 'main':
../src/spvw.d:3674:12: internal compiler error: in refs_may_alias_p_1, at
tree-ssa-alias.c:1083
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Preprocessed source code attached. Flag -O3 required.