Ready to compile hs_init and _amain. But has error.

Program received signal SIGTRAP, Trace/breakpoint trap.
_unhandled_exception () at ../../os/ports/GCC/ARMCMx/STM32F3xx/vectors.c:215
215     void _unhandled_exception(void) {
(gdb) bt
Backtrace stopped: previous frame identical to this frame (corrupt stack?)