PR c++/37376, other mangling issues

gcc/cp/:
        PR c++/37376, other mangling issues
        * mangle.c (write_type): Update TYPE_PACK_EXPANSION mangling.
        (write_member_name): Break out from...
        (write_expression): ...here.  Handle dependent COMPONENT_REF.
        (write_template_arg): Wrap an argument pack in 'I'/'E'.
        (write_builtin_type): Update char16/32_t mangling.
        (write_nested_name, write_prefix): Don't forget template args
        for typename types.
        * operators.def: Add ARROW_EXPR, update COMPONENT_REF and
        EXPR_PACK_EXPANSION.
libstdc++-v3/:
        * config/abi/pre/gnu.ver: Update char16/32_t manglings.
include/:
        * demangle.h (enum demangle_component_type): Add
        DEMANGLE_COMPONENT_PACK_EXPANSION.
libiberty/:
        * cp-demangle.c (struct d_print_info): Add pack_index.
        (d_dump): Add DEMANGLE_COMPONENT_PACK_EXPANSION.
        (d_make_comp): Likewise.  DEMANGLE_COMPONENT_ARGLIST and
        DEMANGLE_COMPONENT_TEMPLATE_ARGLIST can have two null args.
        (cplus_demangle_builtin_types): Add char16/32_t.
        (cplus_demangle_type): Recognize them.
        (d_template_args): Handle empty argument packs.
        (d_template_arg): Handle argument packs.
        (d_expression): Handle dependent name.
        (d_index_template_argument): New fn.
        (d_lookup_template_argument): New fn.
        (d_find_pack, d_pack_length): New fn.
        (d_print_subexpr): Split out...
        (d_print_comp): ...from here.  Use d_*_template_argument.
        Handle empty arg lists.  Support pack expansions.
        * cp-demangle.h (D_BUILTIN_TYPE_COUNT): Increase to 32.

From-SVN: r140916

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 85704e6..44bc3f0 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -2559,7 +2559,7 @@ struct tree_memory_partition_tag GTY(())
 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
    For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
    For a VAR_DECL, holds the initial value.
-   For a PARM_DECL, not used--default
+   For a PARM_DECL, used for DECL_ARG_TYPE--default
    values for parameters are encoded in the type of the function,
    not in the PARM_DECL slot.
    For a FIELD_DECL, this is used for enumeration values and the C