[Bug c/46015] [4.6 Regression] -Wunused-but-set-variable warns for arrays used in gotos

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46015

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-10-18 15:55:31 UTC ---
Author: jakub
Date: Mon Oct 18 15:55:25 2010
New Revision: 165643

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165643
Log:
    PR c/46015
    * c-parser.c (c_parser_statement_after_labels): Call mark_exp_read
    on computed goto argument.

    * semantics.c (finish_goto_stmt): Call mark_rvalue_use on computed
    goto destination.

    * c-c++-common/Wunused-var-13.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/Wunused-var-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-parser.c
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog