[Bug tree-optimization/67055] [5 Regression] Segmentation fault in fold_builtin_alloca_with_align in tree-ssa-ccp.c

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67055

--- Comment #14 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Still happens on gcc-5 branch. 
(This breaks building the Linux kernel with -O3 with my config)
-fno-ipa-icf "fixes" the issue.