[Bug middle-end/81782] [7/8 Regression] Yet another -Wmaybe-uninitialized false positive with empty array

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81782

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Dec  8 14:45:30 2017
New Revision: 255512

URL: https://gcc.gnu.org/viewcvs?rev=255512&root=gcc&view=rev
Log:
2017-12-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/81782
        * tree-ssa-uninit.c (warn_uninitialized_vars): Properly
        handle accesses outside of zero-sized vars.

        * gcc.dg/uninit-pr81782.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/uninit-pr81782.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-uninit.c