[Bug c++/83996] [6/7/8] Regression] ICE with zero-sized array

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83996

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Jan 29 20:54:12 2018
New Revision: 257160

URL: https://gcc.gnu.org/viewcvs?rev=257160&root=gcc&view=rev
Log:
        PR c++/83996
        * constexpr.c (cxx_fold_indirect_ref): Compute ((foo *)&fooarray)[1]
        => fooarray[1] in offset_int.

        * g++.dg/ext/pr83996.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/ext/pr83996.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/testsuite/ChangeLog