[Bug tree-optimization/92452] [10 Regression] ICE in vrp_prop::check_array_ref at tree-vrp.c:4153

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92452

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Nov 12 08:21:40 2019
New Revision: 278080

URL: https://gcc.gnu.org/viewcvs?rev=278080&root=gcc&view=rev
Log:
        PR tree-optimization/92452
        * tree-vrp.c (vrp_prop::check_array_ref): If TRUNC_DIV_EXPR folds
        into NULL_TREE, set up_bound to NULL_TREE instead of computing
        MINUS_EXPR on it.

        * c-c++-common/pr92452.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/pr92452.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c