[Bug c++/67240] [concepts] Implicit conversion constraints are not respected

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67240

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Aug 21 18:33:07 2015
New Revision: 227081

URL: https://gcc.gnu.org/viewcvs?rev=227081&root=gcc&view=rev
Log:
        PR c++/67240
        * constraint.cc (satisfy_implicit_conversion_constraint): Also
        check for NULL_TREE.

Added:
    trunk/gcc/testsuite/g++.dg/concepts/iconv1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constraint.cc