void
__wrap___cxa_throw(void *thrown_exception,
std::type_info *tinfo, void (*dest)(void *)) {
static TlsBool is_currently_throwing;
// if we throw during the course of executing stack save code
// then we just abort
if (is_currently_throwing) abort();
is_currently_throwing = true;
// NB: by using __builtin_frame_address() we force this function to have a
// frame pointer
_dummy = __builtin_frame_address(0);
// get stack trace
void *frames[256];
auto frames_captured =
CaptureStackBackTrace(1, safe::numelementsf(frames),
frames, nullptr);
auto stack_trace = std::vector<void *>(&frames[0],
&frames[frames_captured]);
safe::_set_backtrace_for_exception_ptr(thrown_exception, std::move(stack_trace));
is_currently_throwing = false;
// call original __cxa_throw
__real___cxa_throw(thrown_exception, tinfo, dest);
}
void CXA_THROW(void *ex, CXA_THROW_INFO_T *info, void (*dest)(void*))
{
int status;
char *dsym = abi::__cxa_demangle(((const std::type_info*)info)->name(), NULL, NULL, &status);
tools::log_stack_trace((std::string("Exception: ")+((!status && dsym) ? dsym : (const char*)info)).c_str());
free(dsym);
#ifndef STATICLIB
#ifndef __clang__ // for GCC the attr can't be applied in typedef like for clang
__attribute__((noreturn))
#endif // !__clang__
cxa_throw_t *__real___cxa_throw = (cxa_throw_t*)dlsym(RTLD_NEXT, "__cxa_throw");
#endif // !STATICLIB
__real___cxa_throw(ex, info, dest);
}
