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Diffstat (limited to 'lib/asan/asan_errors.h')
-rw-r--r-- | lib/asan/asan_errors.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/asan/asan_errors.h b/lib/asan/asan_errors.h new file mode 100644 index 000000000..87bc8690f --- /dev/null +++ b/lib/asan/asan_errors.h @@ -0,0 +1,82 @@ +//===-- asan_errors.h -------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file is a part of AddressSanitizer, an address sanity checker. +// +// ASan-private header for error structures. +//===----------------------------------------------------------------------===// +#ifndef ASAN_ERRORS_H +#define ASAN_ERRORS_H + +#include "asan_descriptions.h" +#include "asan_scariness_score.h" + +namespace __asan { + +struct ErrorBase { + ScarinessScoreBase scariness; +}; + +struct ErrorStackOverflow : ErrorBase { + u32 tid; + uptr addr, pc, bp, sp; + // ErrorStackOverflow never owns the context. + void *context; + // VS2013 doesn't implement unrestricted unions, so we need a trivial default + // constructor + ErrorStackOverflow() = default; + ErrorStackOverflow(const SignalContext &sig, u32 tid_) + : tid(tid_), + addr(sig.addr), + pc(sig.pc), + bp(sig.bp), + sp(sig.sp), + context(sig.context) { + scariness.Clear(); + scariness.Scare(10, "stack-overflow"); + } + void Print(); +}; + +enum ErrorKind { + kErrorKindInvalid = 0, + kErrorKindStackOverflow, +}; + +struct ErrorDescription { + ErrorKind kind; + // We're using a tagged union because it allows us to have a trivially + // copiable type and use the same structures as the public interface. + // + // We can add a wrapper around it to make it "more c++-like", but that would + // add a lot of code and the benefit wouldn't be that big. + union { + ErrorStackOverflow stack_overflow; + }; + ErrorDescription() { internal_memset(this, 0, sizeof(*this)); } + ErrorDescription(const ErrorStackOverflow &e) // NOLINT + : kind(kErrorKindStackOverflow), + stack_overflow(e) {} + + bool IsValid() { return kind != kErrorKindInvalid; } + void Print() { + switch (kind) { + case kErrorKindStackOverflow: + stack_overflow.Print(); + return; + case kErrorKindInvalid: + CHECK(0); + } + CHECK(0); + } +}; + +} // namespace __asan + +#endif // ASAN_ERRORS_H |