[Bug rtl-optimization/85167] [6/7 Regression] shrink-wrap.c:333:15: runtime error with UBSAN

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85167

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 22 21:05:08 2018
New Revision: 261946

URL: https://gcc.gnu.org/viewcvs?rev=261946&root=gcc&view=rev
Log:
        Backported from mainline
        2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85167
        * shrink-wrap.c (move_insn_for_shrink_wrap): Don't set bb_uses and
        bb_defs if *split_p, instead preinitialize it to NULL.

        * gcc.dg/pr85167.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr85167.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/shrink-wrap.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog