[Bug c++/69516] [5/6 regression] infinite recursion on a VLA with excess initializer elements in constexpr function

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69516

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Jan 29 09:25:14 2016
New Revision: 232969

URL: https://gcc.gnu.org/viewcvs?rev=232969&root=gcc&view=rev
Log:
        PR c++/69509
        PR c++/69516
        * constexpr.c (cxx_eval_array_reference): Give the "array subscript
        out of bound" error earlier.
        * init.c (build_vec_init): Change NE_EXPR into GT_EXPR.  Update the
        commentary.

        * g++.dg/ext/constexpr-vla2.C: New test.
        * g++.dg/ext/constexpr-vla3.C: New test.
        * g++.dg/ubsan/vla-1.C: Remove dg-shouldfail.

Added:
    trunk/gcc/testsuite/g++.dg/ext/constexpr-vla2.C
    trunk/gcc/testsuite/g++.dg/ext/constexpr-vla3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/cp/init.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/ubsan/vla-1.C