[Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84383

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 15 11:18:47 2018
New Revision: 257684

URL: https://gcc.gnu.org/viewcvs?rev=257684&root=gcc&view=rev
Log:
        PR tree-optimization/84383
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Don't look at
        dstoff nor call operand_equal_p if dstbase is NULL.

        * gcc.c-torture/compile/pr84383.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr84383.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c