[Bug middle-end/52894] [4.5,4.6,4.7,4.8 Regression] Stage1 bootstrap fails with gcc-4.6.3: Infinite loop in pointer_set_insert

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52894

--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> 2012-04-07 
19:09:56 UTC ---
Created attachment 27112
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27112
Patch