[Bug c++/64333] C++14 constexpr gives wrong results when a looping constexpr function is evaluated twice

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64333

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Dec 17 20:41:18 2014
New Revision: 218832

URL: https://gcc.gnu.org/viewcvs?rev=218832&root=gcc&view=rev
Log:
    PR c++/64333
    * constexpr.c (cxx_bind_parameters_in_call): non_constant_args parm.
    (cxx_eval_call_expression): Don't cache calls with non-constant args.
    (cxx_eval_constant_expression) [COMPOUND_EXPR]: Pass true for lval.
    (cxx_eval_unary_expression, cxx_eval_binary_expression)
    (cxx_eval_conditional_expression): Pass    false for lval.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-initlist1.C
    trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-loop2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c