def test_exception(self):
self.run_test_for_event('exception')
+ def test_trash_stack(self):
+ def f():
+ for i in range(5):
+ print i # line tracing will raise an exception at this line
+
+ def g(frame, why, extra):
+ if (why == 'line' and
+ frame.f_lineno == f.func_code.co_firstlineno + 2):
+ raise RuntimeError, "i am crashing"
+ return g
+
+ sys.settrace(g)
+ try:
+ f()
+ except RuntimeError:
+ # the test is really that this doesn't segfault:
+ import gc
+ gc.collect()
+ else:
+ self.fail("exception not propagated")
+
# 'Jump' tests: assigning to frame.f_lineno within a trace function
# moves the execution position - it's how debuggers implement a Jump
for expository comments */
f->f_stacktop = stack_pointer;
- if (maybe_call_line_trace(tstate->c_tracefunc,
- tstate->c_traceobj,
- f, &instr_lb, &instr_ub)) {
+ err = maybe_call_line_trace(tstate->c_tracefunc,
+ tstate->c_traceobj,
+ f, &instr_lb, &instr_ub);
+ /* Reload possibly changed frame fields */
+ JUMPTO(f->f_lasti);
+ if (f->f_stacktop != NULL) {
+ stack_pointer = f->f_stacktop;
+ f->f_stacktop = NULL;
+ }
+ if (err) {
/* trace function raised an exception */
- why = WHY_EXCEPTION;
goto on_error;
}
- /* Reload possibly changed frame fields */
- JUMPTO(f->f_lasti);
- stack_pointer = f->f_stacktop;
- assert(stack_pointer != NULL);
- f->f_stacktop = NULL;
}
/* Extract opcode and argument */