__attribute__((optimize("O0"))) static void checkHardfault() {
    volatile uint32_t* varAtOddAddress = (uint32_t*)-1;
    (*varAtOddAddress)++;
}

gdb-> backtrace
#0  checkHardfault () at Main.cxx:179
#1  0x100360f6 in GetOneEvent () at Main.cxx:185
#2  0x1003604e in executeMainLoop () at Main.cxx:121
#3  0x1001783a in vMainTask (pvParameters=0x0) at Main.cxx:408
#4  0x00000000 in ?? ()

gdb-> backtrace
#0  HardFault_Handler () at Hardfault.c:312
#1  <signal handler called>
#2  0x10015f36 in prvPortStartFirstTask () at freertos/portable/GCC/ARM_CM3/port.c:224
#3  0x10015fd6 in xPortStartScheduler () at freertos/portable/GCC/ARM_CM3/port.c:301
Backtrace stopped: previous frame inner to this frame (corrupt stack?)