[Bug rtl-optimization/82044] runtime signed integer overflow in check_mem_read_rtx() and all_positions_needed_p() in dse.c

marxin at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Nov 21 16:03:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82044

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Nov 21 16:02:35 2017
New Revision: 255013

URL: https://gcc.gnu.org/viewcvs?rev=255013&root=gcc&view=rev
Log:
Backport r255001

2017-11-21  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2017-11-21  Martin Liska  <mliska@suse.cz>

        PR rtl-optimization/82044
        PR tree-optimization/82042
        * dse.c (check_mem_read_rtx): Check for overflow.

Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/dse.c


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