[Bug tree-optimization/91169] [10 regression] cd2a31a FAILs

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91169

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Aug  5 12:30:49 2019
New Revision: 274114

URL: https://gcc.gnu.org/viewcvs?rev=274114&root=gcc&view=rev
Log:
2019-08-05  Richard Biener  <rguenther@suse.de>

        PR middle-end/91169
        * fold-const.c (get_array_ctor_element_at_index): Create
        offset_ints according to the sign of the index type and treat
        that as signed if it is obviously so.

        * gnat.dg/array37.adb: New testcase.

Added:
    trunk/gcc/testsuite/gnat.dg/array37.adb
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog