[Bug tree-optimization/82052] [8 Regression] ICE with "-O3 -m32" on x86_64-linux-gnu (internal compiler error: in pop_to_marker, at tree-ssa-scopedtables.c:71)

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82052

--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Sep  1 15:32:15 2017
New Revision: 251600

URL: https://gcc.gnu.org/viewcvs?rev=251600&root=gcc&view=rev
Log:
        PR tree-optimization/82052
        * tree-ssa-scopedtables.c (avail_exprs_stack::lookup_avail_expr):
        Always initialize the returned slot after a hash table miss
        when INSERT is true.

        PR tree-optimization/82052
        * gcc.c-torture/compile/pr82052.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr82052.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-scopedtables.c