[Bug tree-optimization/50644] ICE in set_is_used added today

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50644

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-20 16:39:15 UTC ---
It doesn't contain enough info though.
In particular, it would be nice to see
p debug_tree (*(tree *)0x2b11d2f00c00)
(the first argument for the innermost walk_tree_1)
and possibly for the outer one too and maybe track through conditional
breakpoint on ggc-page.c ggc_alloc_stat return stmt where the VAR_DECL in it
has been created.