OK.
On Mon, Oct 3, 2016 at 1:32 PM, Jakub Jelinek <ja...@redhat.com> wrote:
> Hi!
>
> In param_list some entries could be error_mark_node, we should just ignore
> those. ALso, this patch optimizes by testing cxx_dialect < cxx14 just once.
>
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
>
> 2016-10-03 Jakub Jelinek <ja...@redhat.com>
>
> PR c++/77791
> * parser.c (cp_parser_lambda_declarator_opt): Only pedwarn
> for C++11 on decls in the param_list. Test cxx_dialect < cxx14 before
> the loop just once.
>
> * g++.dg/cpp0x/lambda/lambda-77791.C: New test.
>
> --- gcc/cp/parser.c.jj 2016-09-27 21:09:59.000000000 +0200
> +++ gcc/cp/parser.c 2016-10-03 15:00:31.759317804 +0200
> @@ -10114,10 +10114,11 @@ cp_parser_lambda_declarator_opt (cp_pars
>
> /* Default arguments shall not be specified in the
> parameter-declaration-clause of a lambda-declarator. */
> - for (tree t = param_list; t; t = TREE_CHAIN (t))
> - if (TREE_PURPOSE (t) && cxx_dialect < cxx14)
> - pedwarn (DECL_SOURCE_LOCATION (TREE_VALUE (t)), OPT_Wpedantic,
> - "default argument specified for lambda parameter");
> + if (cxx_dialect < cxx14)
> + for (tree t = param_list; t; t = TREE_CHAIN (t))
> + if (TREE_PURPOSE (t) && DECL_P (TREE_VALUE (t)))
> + pedwarn (DECL_SOURCE_LOCATION (TREE_VALUE (t)), OPT_Wpedantic,
> + "default argument specified for lambda parameter");
>
> cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN);
>
> --- gcc/testsuite/g++.dg/cpp0x/lambda/lambda-77791.C.jj 2016-10-03
> 15:01:21.831694292 +0200
> +++ gcc/testsuite/g++.dg/cpp0x/lambda/lambda-77791.C 2016-10-03
> 14:58:22.000000000 +0200
> @@ -0,0 +1,4 @@
> +// PR c++/77791
> +// { dg-do compile { target c++11 } }
> +
> +auto a = [] (int i, int i = 0) {}; // { dg-error "redefinition of" }
>
> Jakub
