[Bug c++/91391] Bogus -Wcomma-subscript

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91391

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Aug 14 14:44:55 2019
New Revision: 274483

URL: https://gcc.gnu.org/viewcvs?rev=274483&root=gcc&view=rev
Log:
        PR c++/91391 - bogus -Wcomma-subscript warning.
        * parser.c (cp_parser_postfix_open_square_expression): Don't warn about
        a deprecated comma here.  Pass warn_comma_subscript down to
        cp_parser_expression.
        (cp_parser_expression): New bool parameter.  Warn about uses of a comma
        operator within a subscripting expression.
        (cp_parser_skip_to_closing_square_bracket): Revert to pre-r274121
state.
        (cp_parser_skip_to_closing_square_bracket_1): Remove.

        * g++.dg/cpp2a/comma5.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp2a/comma5.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog