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| author | Martin Liska <mliska@suse.cz> | 2018-02-05 12:01:50 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2018-02-05 11:01:50 +0000 |
| commit | 4c4f3c3fefc61ca5045a6c1d7592786e2cf57499 (patch) | |
| tree | 47f182084e3c2b708b3cf75ae1acf6cb4705feaf /libsanitizer/asan | |
| parent | ba26157992975c2cdad2020571cdabf77a5b7c41 (diff) | |
| download | gcc-4c4f3c3fefc61ca5045a6c1d7592786e2cf57499.zip gcc-4c4f3c3fefc61ca5045a6c1d7592786e2cf57499.tar.gz gcc-4c4f3c3fefc61ca5045a6c1d7592786e2cf57499.tar.bz2 | |
Cherry-pick libsanitizer pointer-pair tristate option.
2018-02-05 Martin Liska <mliska@suse.cz>
* doc/invoke.texi: Cherry-pick upstream r323995.
2018-02-05 Martin Liska <mliska@suse.cz>
* c-c++-common/asan/pointer-compare-1.c: Adjust ASAN_OPTIONS
options.
* c-c++-common/asan/pointer-compare-2.c: Likewise.
* c-c++-common/asan/pointer-subtract-1.c: Likewise.
* c-c++-common/asan/pointer-subtract-2.c: Likewise.
* c-c++-common/asan/pointer-subtract-3.c: Likewise.
* c-c++-common/asan/pointer-subtract-4.c: Likewise.
* c-c++-common/asan/pointer-compare-3.c: New test.
2018-02-05 Martin Liska <mliska@suse.cz>
* asan/asan_flags.inc: Cherry-pick upstream r323995.
* asan/asan_report.cc (CheckForInvalidPointerPair):
Cherry-pick upstream r323995.
From-SVN: r257387
Diffstat (limited to 'libsanitizer/asan')
| -rw-r--r-- | libsanitizer/asan/asan_flags.inc | 6 | ||||
| -rw-r--r-- | libsanitizer/asan/asan_report.cc | 6 |
2 files changed, 8 insertions, 4 deletions
diff --git a/libsanitizer/asan/asan_flags.inc b/libsanitizer/asan/asan_flags.inc index 3784f06..b4253e0 100644 --- a/libsanitizer/asan/asan_flags.inc +++ b/libsanitizer/asan/asan_flags.inc @@ -134,9 +134,9 @@ ASAN_FLAG( "Android. ") ASAN_FLAG( int, detect_invalid_pointer_pairs, 0, - "If non-zero, try to detect operations like <, <=, >, >= and - on " - "invalid pointer pairs (e.g. when pointers belong to different objects). " - "The bigger the value the harder we try.") + "If >= 2, detect operations like <, <=, >, >= and - on invalid pointer " + "pairs (e.g. when pointers belong to different objects); " + "If == 1, detect invalid operations only when both pointers are non-null.") ASAN_FLAG( bool, detect_container_overflow, true, "If true, honor the container overflow annotations. See " diff --git a/libsanitizer/asan/asan_report.cc b/libsanitizer/asan/asan_report.cc index 261ec1a..434aa73 100644 --- a/libsanitizer/asan/asan_report.cc +++ b/libsanitizer/asan/asan_report.cc @@ -340,7 +340,11 @@ static bool IsInvalidPointerPair(uptr a1, uptr a2) { } static INLINE void CheckForInvalidPointerPair(void *p1, void *p2) { - if (!flags()->detect_invalid_pointer_pairs) return; + switch (flags()->detect_invalid_pointer_pairs) { + case 0 : return; + case 1 : if (p1 == nullptr || p2 == nullptr) return; break; + } + uptr a1 = reinterpret_cast<uptr>(p1); uptr a2 = reinterpret_cast<uptr>(p2); |