[Bug tree-optimization/88693] [9 Regression] Wrong code since r263018

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88693

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jan 11 19:04:32 2019
New Revision: 267852

URL: https://gcc.gnu.org/viewcvs?rev=267852&root=gcc&view=rev
Log:
        PR tree-optimization/88693
        * tree-ssa-strlen.c (get_min_string_length): Don't set *full_string_p
        for STRING_CSTs that don't contain any NUL characters in the first
        TREE_STRING_LENGTH bytes.

        * gcc.c-torture/execute/pr88693.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr88693.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c