message: Don't call backtrace() on WASM fault in WAVM
  Docs clearly state this is not a safe call from a signal handler.
diff: @@ -278,7 +278,7 @@ namespace Platform
  CallStack captureCallStack(Uptr numOmittedFramesFromTop)
  {
  - #if defined __linux__ || defined __FreeBSD__
  + #if 0
  // Unwind the callstack.
  enum { maxCallStackSize = signalStackNumBytes / sizeof(void*) / 8 };
  void* callstackAddresses[maxCallStackSize];
  