[Bug tree-optimization/57864] [4.7 Regression] ICE in bitmap_set_replace_value, at tree-ssa-pre.c:862

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57864

--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> ---
Created attachment 30486
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30486&action=edit
slightly reduced test case in plain C

Doesn't depend on C++, this plain C version also ICEs 4.7.3.