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Armin Rigo's fix & test for

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[ 729622 ] line tracing hook errors

with massaging from me to integrate test into test suite.
This commit is contained in:
Michael W. Hudson 2003-04-29 16:18:47 +00:00
parent 572f5233f0
commit 58ee2af48e
2 changed files with 32 additions and 10 deletions
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21
Lib/test/test_trace.py
View file

@ -221,6 +221,27 @@ class RaisingTraceFuncTestCase(unittest.TestCase):
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

15
Python/ceval.c
View file

@ -819,19 +819,20 @@ eval_frame(PyFrameObject *f)
for expository comments */
f->f_stacktop = stack_pointer;
if (maybe_call_line_trace(tstate->c_tracefunc,
err = maybe_call_line_trace(tstate->c_tracefunc,
tstate->c_traceobj,
f, &instr_lb, &instr_ub)) {
/* trace function raised an exception */
why = WHY_EXCEPTION;
goto on_error;
}
f, &instr_lb, &instr_ub);
/* Reload possibly changed frame fields */
JUMPTO(f->f_lasti);
if (f->f_stacktop != NULL) {
stack_pointer = f->f_stacktop;
assert(stack_pointer != NULL);
f->f_stacktop = NULL;
}
if (err) {
/* trace function raised an exception */
goto on_error;
}
}
/* Extract opcode and argument */