[Bug c++/83058] [6/7/8 Regression] ICE on C++ code with negative array index: in warn_placement_new_too_small, at cp/init.c:2666

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83058

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Nov 28 00:02:17 2017
New Revision: 255182

URL: https://gcc.gnu.org/viewcvs?rev=255182&root=gcc&view=rev
Log:
PR c++/83058 - ICE on C++ code with negative array index: in
warn_placement_new_too_small

gcc/cp/ChangeLog:

        PR c++/83058
        * init.c (warn_placement_new_too_small): Use offset_int instead of
        HOST_WIDE_INT.

gcc/testsuite/ChangeLog:

        PR c++/83058
        * g++.dg/warn/Wplacement-new-size-5.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/warn/Wplacement-new-size-5.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/init.c
    trunk/gcc/testsuite/ChangeLog