re PR c++/44193 (function types, cv-quals and typename)
PR c++/44193
* typeck.c (type_memfn_quals): New fn.
(apply_memfn_quals): New fn.
(cp_type_quals): Return TYPE_UNQUALIFIED for FUNCTION_TYPE.
(cp_type_readonly): Use cp_type_quals.
* cp-tree.h: Add declarations.
* tree.c (cp_build_qualified_type_real): Don't set, but do
preserve, quals on FUNCTION_TYPE.
(strip_typedefs): Use apply_memfn_quals and type_memfn_quals.
* decl.c (build_ptrmem_type): Likewise.
(grokdeclarator): Likewise.
(static_fn_type): Likewise.
* decl2.c (change_return_type): Likewise.
(cp_reconstruct_complex_type): Likewise.
* pt.c (tsubst_function_type): Likewise.
(unify): Likewise.
(tsubst): Likewise. Drop special FUNCTION_TYPE substitution code.
From-SVN: r159596