[Bug middle-end/55046] [4.8 Regression] ICE in ira_reuse_stack_slot at ira-color.c:4065

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55046

--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> 2012-10-27 20:43:59 UTC ---
It doesn't help to return NULL_RTX when allocno is zero.