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On ResourceWarning, log traceback where the object was allocated

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Issue #26567:

* Add a new function PyErr_ResourceWarning() function to pass the destroyed
  object
* Add a source attribute to warnings.WarningMessage
* Add warnings._showwarnmsg() which uses tracemalloc to get the traceback where
  source object was allocated.
This commit is contained in:
Victor Stinner 2016-03-19 01:03:51 +01:00
parent 1231a4615f
commit 914cde89d4
11 changed files with 175 additions and 40 deletions
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3
Modules/socketmodule.c
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@ -4170,8 +4170,7 @@ sock_dealloc(PySocketSockObject *s)
Py_ssize_t old_refcount = Py_REFCNT(s);
++Py_REFCNT(s);
PyErr_Fetch(&exc, &val, &tb);
if (PyErr_WarnFormat(PyExc_ResourceWarning, 1,
"unclosed %R", s))
if (PyErr_ResourceWarning(s, 1, "unclosed %R", s))
/* Spurious errors can appear at shutdown */
if (PyErr_ExceptionMatches(PyExc_Warning))
PyErr_WriteUnraisable((PyObject *) s);