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Re: [C++ PATCH] Add __is_aggregate trait builtin (PR libstdc++/80251)

From: Jeff Law <law at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>, Jason Merrill <jason at redhat dot com>, Jonathan Wakely <jwakely at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org
Date: Fri, 31 Mar 2017 00:27:34 -0600
Subject: Re: [C++ PATCH] Add __is_aggregate trait builtin (PR libstdc++/80251)
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References: <20170330203417.GO17461@tucnak>

On 03/30/2017 02:34 PM, Jakub Jelinek wrote:

Hi!

As discussed with Jon, libstdc++ needs a GCC builtin in order to implement
this easily.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2017-03-30  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/80251
c-family/
	* c-common.h (enum rid): Add RID_IS_AGGREGATE.
	* c-common.c (c_common_reswords): Add __is_aggregate trait.
	* cp-tree.h (enum cp_trait_kind): Add CPTK_IS_AGGREGATE.
	* cxx-pretty-print.c (pp_cxx_trait_expression): Handle
	CPTK_IS_AGGREGATE.
	* semantics.c (trait_expr_value): Handle CPTK_IS_AGGREGATE.
	Remove extraneous parens.
	(finish_trait_expr): Handle CPTK_IS_AGGREGATE.
	* parser.c (cp_parser_primary_expression): Handle RID_IS_AGGREGATE.
	(cp_parser_trait_expr): Likewise.
testsuite/
	* g++.dg/ext/is_aggregate.C: New test.

OK.

jeff

References:
- [C++ PATCH] Add __is_aggregate trait builtin (PR libstdc++/80251)
  - From: Jakub Jelinek

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