[Bug middle-end/91584] [9 Regression] Bogus warning from -Warray-bounds during string assignment

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91584

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Aug 30 17:42:57 2019
New Revision: 275210

URL: https://gcc.gnu.org/viewcvs?rev=275210&root=gcc&view=rev
Log:
PR middle-end/91584 - Bogus warning from -Warray-bounds during string
assignment

gcc/ChangeLog:

        PR middle-end/91584
        * tree-vrp.c (vrp_prop::check_mem_ref): Normalize type domain bounds
        before using them to validate MEM_REF offset.

gcc/testsuite/ChangeLog:
        * gfortran.dg/char_array_constructor_4.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/char_array_constructor_4.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c