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        (self_promoting_type_p): Delete.
        (self_promoting_args_p): Move ...
        * c-common.c: ... here.
        (c_common_nodes_and_builtins): Initialize lang_type_promotes_to.
        (simple_type_promotes_to): New.
        * builtins.c (lang_type_promotes_to): New.
        (expand_builtin_va_arg): Use it to give diagnostic for illegal types.
        * c-tree.h (C_PROMOTING_INTEGER_TYPE_P): Move ...
        * c-common.h: ... here.
        (self_promoting_args_p, simple_type_promotes_to): Declare.
        * c-decl.c (duplicate_decls): Use simple_type_promotes_to.
        (grokdeclarator): Likewise.
        * tree.h (lang_type_promotes_to): Declare.

        * cp-tree.h (C_PROMOTING_INTEGER_TYPE_P): Delete.
        * typeck.c (self_promoting_args_p): Delete.

        * gcc.dg/va-arg-1.c: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@29180 138bc75d-0d04-0410-961f-82ee72b054a4