* cp-tree.h (enum cp_tree_index): Add CPTI_PFN_VFLAG_IDENTIFIER.
(pfn_vflag_identifier): Define.
Update comment about layout of pointer functions.
(build_ptrmemfunc1): Update prototype.
(expand_ptrmemfunc_cst): Update prototype.
* decl.c (initialize_predefined_identifiers): Initialize
pfn_vflag_identifier.
(build_ptrmemfunc_type): When FUNCTION_BOUNDARY < 16, add
an extra field to the type.
* expr.c (cplus_expand_constant): Pass 'flag' between
expand_ptrmemfunc_cst and build_ptrmemfunc1.
* typeck.c (get_member_function_from_ptrfunc): When
FUNCTION_BOUNDARY < 16, look at additional field to determine
if a pointer-to-member is a real pointer or a vtable offset.
(build_ptrmemfunc1): Add new parameter to contain extra field.
(build_ptrmemfunc): Pass the extra field around.
(expand_ptrmemfunc_cst): Add new parameter to return extra field.
(pfn_from_ptrmemfunc): Ignore the extra field.
From-SVN: r41824
