[Bug bootstrap/30511] False array bound check causes gcc failed to boostrap

[mueller at gcc dot gnu dot org]

------- Comment #9 from mueller at gcc dot gnu dot org  2007-01-30 17:18 -------
Subject: Bug 30511

Author: mueller
Date: Tue Jan 30 17:17:39 2007
New Revision: 121346

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=121346
Log:
backport from mainline:

  2007-01-21  Dirk Mueller  <[EMAIL PROTECTED]>

        PR bootstrap/30511
        * tree-vrp.c (check_array_bounds): do not warn
        about ADDR_EXPR's of ARRAY_REF's which are immediately
        used in binary expressions.

  2007-01-19  Dirk Mueller  <[EMAIL PROTECTED]>

        * config/i386.h (CONDITIONAL_REGISTER_USAGE): Store
        result of PIC_OFFSET_TABLE_REGNUM in temporary variable to avoid
        duplicate evaluation.

  2007-01-18  Dirk Mueller  <[EMAIL PROTECTED]>
            Richard Guenther <[EMAIL PROTECTED]>

        PR diagnostic/8268
        * doc/invoke.texi (Warray-bounds): Document -Warray-bounds.
        * common.opt (Warray-bounds): Add new warning option.
        * c-opts.c (c_common_handle_option): Define -Warray-bounds
        if -Wall is given.
        * Makefile.in: make tree-vrp.o depend on toplev.h
        * tree-vrp.c (vrp_finalize): Call check_array_refs if
        * -Warray-bounds
        is enabled.
        (check_array_refs, check_array_bounds, check_array_ref): New.


Added:
    branches/suse/gcc-4_2-branch/gcc/testsuite/g++.dg/warn/Warray-bounds-2.C
      - copied unchanged from r120898,
trunk/gcc/testsuite/g++.dg/warn/Warray-bounds-2.C
    branches/suse/gcc-4_2-branch/gcc/testsuite/g++.dg/warn/Warray-bounds.C
      - copied unchanged from r120898,
trunk/gcc/testsuite/g++.dg/warn/Warray-bounds.C
    branches/suse/gcc-4_2-branch/gcc/testsuite/gcc.dg/Warray-bounds-2.c
      - copied unchanged from r120898,
trunk/gcc/testsuite/gcc.dg/Warray-bounds-2.c
    branches/suse/gcc-4_2-branch/gcc/testsuite/gcc.dg/Warray-bounds.c
      - copied unchanged from r120898,
trunk/gcc/testsuite/gcc.dg/Warray-bounds.c
Modified:
    branches/suse/gcc-4_2-branch/gcc/Makefile.in
    branches/suse/gcc-4_2-branch/gcc/c-opts.c
    branches/suse/gcc-4_2-branch/gcc/common.opt
    branches/suse/gcc-4_2-branch/gcc/config/i386/i386.h
    branches/suse/gcc-4_2-branch/gcc/doc/invoke.texi
    branches/suse/gcc-4_2-branch/gcc/tree-vrp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30511