From 6637388fdc4b4c82c906966024f9012fc0c71df5 Mon Sep 17 00:00:00 2001 From: Tristan Gingold Date: Tue, 11 Oct 2011 07:13:59 +0000 Subject: c.opt: (fallow-parameterless-variadic-functions): New. c-family/ChangeLog 2011-10-11 Tristan Gingold * c.opt: (fallow-parameterless-variadic-functions): New. ChangeLog 2011-10-11 Tristan Gingold * doc/invoke.texi (C Dialect Options): Document -fallow-parameterless-variadic-functions. * c-parser.c (c_parser_parms_list_declarator): Handle it. testsuite/ChangeLog 2011-10-11 Tristan Gingold * gcc.dg/va-arg-4.c: New test. * gcc.dg/va-arg-5.c: Ditto. From-SVN: r179786 --- gcc/c-parser.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'gcc/c-parser.c') diff --git a/gcc/c-parser.c b/gcc/c-parser.c index c948b802ca5..af6cc149efc 100644 --- a/gcc/c-parser.c +++ b/gcc/c-parser.c @@ -3159,10 +3159,19 @@ c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr) if (c_parser_next_token_is (parser, CPP_ELLIPSIS)) { struct c_arg_info *ret = build_arg_info (); - /* Suppress -Wold-style-definition for this case. */ - ret->types = error_mark_node; - error_at (c_parser_peek_token (parser)->location, - "ISO C requires a named argument before %<...%>"); + + if (flag_allow_parameterless_variadic_functions) + { + /* F (...) is allowed. */ + ret->types = NULL_TREE; + } + else + { + /* Suppress -Wold-style-definition for this case. */ + ret->types = error_mark_node; + error_at (c_parser_peek_token (parser)->location, + "ISO C requires a named argument before %<...%>"); + } c_parser_consume_token (parser); if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN)) { -- cgit v1.2.1