Function segfault_stack_frame_1

src/segfault-handler.cpp:261–277

// create some stack frames to inspect from CauseSegfault
#ifndef _WIN32
__attribute__ ((noinline))
#else
__declspec(noinline)
#endif
void segfault_stack_frame_1()
{
  // DDOPSON-2013-04-16 using the address "1" instead of "0" prevents a nasty compiler over-optimization
  // When using "0", the compiler will over-optimize (unless using -O0) and generate a UD2 instruction
  // UD2 is x86 for "Invalid Instruction" ... (yeah, they have a valid code that means invalid)
  // Long story short, we don't get our SIGSEGV.  Which means no pretty demo of stacktraces.
  // Instead, you see "Illegal Instruction: 4" on the console and the program stops.

  int *foo = (int*)1;
  fprintf(stderr, "NodeSegfaultHandlerNative: about to dereference NULL (will cause a SIGSEGV)\n");
  *foo = 78; // trigger a SIGSEGV

}

#ifndef _WIN32
__attribute__ ((noinline))