[Bug sanitizer/61547] Invalid sanitization of trailing byte in __builtin_strlen

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61547

--- Comment #6 from ygribov at gcc dot gnu.org ---
Author: ygribov
Date: Thu Oct 16 13:46:39 2014
New Revision: 216326

URL: https://gcc.gnu.org/viewcvs?rev=216326&root=gcc&view=rev
Log:
New asan-instrumentation-with-call-threshold
 parameter.

2014-10-16  Yury Gribov  <y.gribov@samsung.com>

    Backport from mainline
    2014-06-16  Yury Gribov  <y.gribov@samsung.com>

    * asan.c (check_func): New function.
    (maybe_create_ssa_name): Likewise.
    (build_check_stmt_with_calls): Likewise.
    (use_calls_p): Likewise.
    (report_error_func): Change interface.
    (build_check_stmt): Allow non-integer lengths; add support
    for new parameter.
    (asan_instrument): Likewise.
    (instrument_mem_region_access): Moved code to
    build_check_stmt.
    (instrument_derefs): Likewise.
    (instrument_strlen_call): Likewise.
    * cfgcleanup.c (old_insns_match_p): Add support for new
    functions.
    * doc/invoke.texi: Describe new parameter.
    * params.def: Define new parameter.
    * params.h: Likewise.
    * sanitizer.def: Describe new builtins.

    * c-c++-common/asan/instrument-with-calls-1.c: New test.
    * c-c++-common/asan/instrument-with-calls-2.c: Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-1.c: Update
    test patterns.
    * c-c++-common/asan/no-redundant-instrumentation-2.c:
    Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-4.c:
    Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-5.c:
    Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-6.c:
    Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-7.c:
    Likewise.
    * c-c++-common/asan/no-redundant-instrumentation-8.c:
    Likewise.

    Backport from mainline
    2014-06-16  Yury Gribov  <y.gribov@samsung.com>

    * asan.c (build_check_stmt): Fix maybe-uninitialized warning.

    Backport from mainline
    2014-06-18  Yury Gribov  <y.gribov@samsung.com>

    PR sanitizer/61530

    * asan.c (build_check_stmt): Add condition.

    * c-c++-common/asan/pr61530.c: New test.

    Backport from mainline
    2014-06-18  Yury Gribov  <y.gribov@samsung.com>

    PR sanitizer/61547

    * asan.c (instrument_strlen_call): Fixed instrumentation of
    trailing byte.

    * c-c++-common/asan/strlen-overflow-1.c: New test.

Added:
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/instrument-with-calls-1.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/instrument-with-calls-2.c
    branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/pr61530.c
    branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/strlen-overflow-1.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/asan.c
    branches/gcc-4_9-branch/gcc/cfgcleanup.c
    branches/gcc-4_9-branch/gcc/doc/invoke.texi
    branches/gcc-4_9-branch/gcc/params.def
    branches/gcc-4_9-branch/gcc/params.h
    branches/gcc-4_9-branch/gcc/sanitizer.def
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-1.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-2.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-4.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-5.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-6.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-7.c
   
branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-8.c