[Bug tree-optimization/81592] spurious -Wformat-overflow warning with -fsanitize=signed-integer-overflow

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81592

--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Tue Feb 20 18:52:07 2018
New Revision: 257852

URL: https://gcc.gnu.org/viewcvs?rev=257852&root=gcc&view=rev
Log:
        PR middle-end/82123
        PR tree-optimization/81592
        PR middle-end/79257
        * gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and
        gimple-ssa-evrp-analyze.h
        (class sprintf_dom_walker): Add after_dom_children member function.
        Add evrp_range_analyzer member.
        (sprintf_dom_walker::before_dom_children): Call into the EVRP
        range analyzer as needed.
        (sprintf_dom_walker::after_dom_children): New member function.

        * gcc.dg/builtin-unreachable-6.c: Turn off VRP.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-sprintf.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/builtin-unreachable-6.c