1 //=-- ubsan_signals_standalone.cc
2 //------------------------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // Installs signal handlers and related interceptors for UBSan standalone.
13 //===----------------------------------------------------------------------===//
15 #include "ubsan_platform.h"
17 #include "interception/interception.h"
18 #include "sanitizer_common/sanitizer_stacktrace.h"
19 #include "ubsan_diag.h"
20 #include "ubsan_init.h"
22 #define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
23 #include "sanitizer_common/sanitizer_signal_interceptors.inc"
28 void InitializeDeadlySignals() {}
30 static void OnStackUnwind(const SignalContext &sig, const void *,
31 BufferedStackTrace *stack) {
32 GetStackTrace(stack, kStackTraceMax, sig.pc, sig.bp, sig.context,
33 common_flags()->fast_unwind_on_fatal);
36 static void UBsanOnDeadlySignal(int signo, void *siginfo, void *context) {
37 HandleDeadlySignal(siginfo, context, GetTid(), &OnStackUnwind, nullptr);
40 static bool is_initialized = false;
42 void InitializeDeadlySignals() {
45 is_initialized = true;
46 InitializeSignalInterceptors();
47 InstallDeadlySignalHandlers(&UBsanOnDeadlySignal);
51 } // namespace __ubsan
53 #endif // CAN_SANITIZE_UB