[Bug c/48742] [4.5/4.6/4.7 Regression] Internal error in glimplify_expr

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48742

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-04-26 
15:16:05 UTC ---
Created attachment 24104
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24104
gcc46-pr48742.patch

So do you mean something like this?  Haven't bootstrapped/regtested it yet...