Patch #1733973 by peaker:
ptrace_enter_call() assumes no exception is currently set. This assumption is broken when throwing into a generator.
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@ -369,11 +369,20 @@ ptrace_enter_call(PyObject *self, void *key, PyObject *userObj)
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ProfilerEntry *profEntry;
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ProfilerContext *pContext;
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/* In the case of entering a generator expression frame via a
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* throw (gen_send_ex(.., 1)), we may already have an
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* Exception set here. We must not mess around with this
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* exception, and some of the code under here assumes that
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* PyErr_* is its own to mess around with, so we have to
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* save and restore any current exception. */
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PyObject *last_type, *last_value, *last_tb;
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PyErr_Fetch(&last_type, &last_value, &last_tb);
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profEntry = getEntry(pObj, key);
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if (profEntry == NULL) {
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profEntry = newProfilerEntry(pObj, key, userObj);
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if (profEntry == NULL)
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return;
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goto restorePyerr;
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}
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/* grab a ProfilerContext out of the free list */
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pContext = pObj->freelistProfilerContext;
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@ -386,10 +395,13 @@ ptrace_enter_call(PyObject *self, void *key, PyObject *userObj)
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malloc(sizeof(ProfilerContext));
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if (pContext == NULL) {
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pObj->flags |= POF_NOMEMORY;
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return;
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goto restorePyerr;
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}
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}
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initContext(pObj, pContext, profEntry);
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restorePyerr:
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PyErr_Restore(last_type, last_value, last_tb);
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}
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static void
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