[Bug c++/71537] GCC rejects consetxpr boolean conversions and comparisons on the result of pointer arithmetic.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71537

--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec  6 09:24:36 2016
New Revision: 243286

URL: https://gcc.gnu.org/viewcvs?rev=243286&root=gcc&view=rev
Log:
        PR c++/71537
        * fold-const.c (fold_comparison): Assume CONSTANT_CLASS_P (base0)
        plus offset is non-zero.  For maybe_nonzero_address decl base0,
        require indirect_base0.

        * g++.dg/cpp0x/constexpr-71537.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-71537.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog