[Bug c++/51421] [c++0x] ICE with invalid use of auto

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51421

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2012-08-25 09:53:34 UTC ---
Author: paolo
Date: Sat Aug 25 09:53:30 2012
New Revision: 190665

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190665
Log:
/cp
2012-08-25  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/51421
    * decl2.c (mark_used): Consistently return false after errors
    about uses before deduction of auto.
    * semantics.c (finish_id_expression): Check mark_used return
    value and return error_mark_node in case of failure.

/testsuite
2012-08-25  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/51421
    * g++.dg/cpp0x/auto34.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/auto34.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog