Index: lib/sanitizer_common/sanitizer_platform_interceptors.h
===================================================================
--- lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -389,7 +389,7 @@
 #define SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE (!SI_MAC)
 #define SANITIZER_INTERCEPT_MCHECK_MPROBE SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_WCSCAT SI_POSIX
-#define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS)
+#define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_BSD_SIGNAL SI_ANDROID
 
 #endif  // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H
Index: lib/ubsan/ubsan_signals_standalone.cc
===================================================================
--- lib/ubsan/ubsan_signals_standalone.cc
+++ lib/ubsan/ubsan_signals_standalone.cc
@@ -24,6 +24,7 @@
 
 namespace __ubsan {
 
+#if !SANITIZER_FUCHSIA
 static void OnStackUnwind(const SignalContext &sig, const void *,
                           BufferedStackTrace *stack) {
   GetStackTraceWithPcBpAndContext(stack, kStackTraceMax, sig.pc, sig.bp,
@@ -36,13 +37,16 @@
 }
 
 static bool is_initialized = false;
+#endif
 
 void InitializeDeadlySignals() {
+#if !SANITIZER_FUCHSIA
   if (is_initialized)
     return;
   is_initialized = true;
   InitializeSignalInterceptors();
   InstallDeadlySignalHandlers(&UBsanOnDeadlySignal);
+#endif
 }
 
 } // namespace __ubsan