diff options
Diffstat (limited to 'lib/sanitizer_common/sanitizer_common.h')
-rw-r--r-- | lib/sanitizer_common/sanitizer_common.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/sanitizer_common/sanitizer_common.h b/lib/sanitizer_common/sanitizer_common.h index ad056df38..87b8f02b5 100644 --- a/lib/sanitizer_common/sanitizer_common.h +++ b/lib/sanitizer_common/sanitizer_common.h @@ -881,6 +881,11 @@ struct SignalContext { bool is_memory_access; enum WriteFlag { UNKNOWN, READ, WRITE } write_flag; + // In some cases the kernel cannot provide the true faulting address; `addr` + // will be zero then. This field allows to distinguish between these cases + // and dereferences of null. + bool is_true_faulting_addr; + // VS2013 doesn't implement unrestricted unions, so we need a trivial default // constructor SignalContext() = default; @@ -893,7 +898,8 @@ struct SignalContext { context(context), addr(GetAddress()), is_memory_access(IsMemoryAccess()), - write_flag(GetWriteFlag()) { + write_flag(GetWriteFlag()), + is_true_faulting_addr(IsTrueFaultingAddress()) { InitPcSpBp(); } @@ -914,6 +920,7 @@ struct SignalContext { uptr GetAddress() const; WriteFlag GetWriteFlag() const; bool IsMemoryAccess() const; + bool IsTrueFaultingAddress() const; }; void InitializePlatformEarly(); |