[Bug sanitizer/59331] ubsan gives extra warnings with vla.

["mpolacek at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59331

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Nov 29 21:29:48 2013
New Revision: 205544

URL: http://gcc.gnu.org/viewcvs?rev=205544&root=gcc&view=rev
Log:
    PR sanitizer/59331
cp/
    * decl.c (compute_array_index_type): Don't build COMPOUND_EXPR for
    instrumentation.
testsuite/
    * g++.dg/ubsan/pr59331.C: New test.
    * g++.dg/ubsan/cxx1y-vla.C: Enable -Wall -Wno-unused-variable.
    Disable the -w option.
    * c-c++-common/ubsan/vla-1.c: Likewise.
    * c-c++-common/ubsan/vla-2.c: Likewise.
    * c-c++-common/ubsan/vla-3.c: Don't use the -w option.


Added:
    trunk/gcc/testsuite/g++.dg/ubsan/pr59331.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/c-c++-common/ubsan/vla-1.c
    trunk/gcc/testsuite/c-c++-common/ubsan/vla-2.c
    trunk/gcc/testsuite/c-c++-common/ubsan/vla-3.c
    trunk/gcc/testsuite/g++.dg/ubsan/cxx1y-vla.C