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bpo-35742: Fix test_envar_unimportable in test_builtin. (GH-11561)

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Handle the case of an empty module name in PYTHONBREAKPOINT.

Fixes a regression introduced in bpo-34756.
This commit is contained in:
Serhiy Storchaka 2019-01-15 13:26:38 +02:00 • committed by GitHub
parent b91140fdb1
commit 3607ef43c4
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 10 deletions
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25
Python/sysmodule.c
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@ -141,11 +141,14 @@ sys_breakpointhook(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
modulepath = PyUnicode_FromString("builtins");
attrname = envar;
}
else {
else if (last_dot != envar) {
/* Split on the last dot; */
modulepath = PyUnicode_FromStringAndSize(envar, last_dot - envar);
attrname = last_dot + 1;
}
else {
goto warn;
}
if (modulepath == NULL) {
PyMem_RawFree(envar);
return NULL;
@ -155,27 +158,29 @@ sys_breakpointhook(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
Py_DECREF(modulepath);
if (module == NULL) {
goto error;
if (PyErr_ExceptionMatches(PyExc_ImportError)) {
goto warn;
}
PyMem_RawFree(envar);
return NULL;
}
PyObject *hook = PyObject_GetAttrString(module, attrname);
Py_DECREF(module);
if (hook == NULL) {
goto error;
if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
goto warn;
}
PyMem_RawFree(envar);
return NULL;
}
PyMem_RawFree(envar);
PyObject *retval = _PyObject_FastCallKeywords(hook, args, nargs, keywords);
Py_DECREF(hook);
return retval;
error:
if (!PyErr_ExceptionMatches(PyExc_ImportError)
&& !PyErr_ExceptionMatches(PyExc_AttributeError))
{
PyMem_RawFree(envar);
return NULL;
}
warn:
/* If any of the imports went wrong, then warn and ignore. */
PyErr_Clear();
int status = PyErr_WarnFormat(