Jason Merrill
d02f620dc0
re PR c++/20332 (poor diagnostic when bind non lvalue to a reference for default arguments)
PR c++/20332
PR c++/21631
* call.c (reference_binding): Treat lvalue/rvalue mismatch and
dropped cv-quals as a bad conversion.
(convert_like_real) [ck_ref_bind]: Explain them.
(compare_ics): Check badness before stripping reference
bindings. Handle comparing bad reference bindings.
* typeck.c (comp_cv_qualification): Add overload that just takes
integers.
* cp-tree.h: Declare it.
From-SVN: r210436