[Bug middle-end/67649] trunk build with valgrind fail in get_def_blocks_for

[miyuki at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67649

--- Comment #7 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
Probably. Will look at this today (valgrind has some sort of memory pool API, I
think it can be used here).
I need to configure GCC with --enable-checking=yes,valgrind to reproduce this,
right?