[issue18408] Fixes crashes found by pyfailmalloc

[Roundup Robot]

Roundup Robot added the comment:

New changeset 735e3c43e61c by Victor Stinner in branch 'default':
Issue #18408: Fix pyexpat.ParserCreate()
http://hg.python.org/cpython/rev/735e3c43e61c

New changeset 27f8ccce687d by Victor Stinner in branch 'default':
Issue #18408: Fix CJK decoders, raise MemoryError on memory allocation failure
http://hg.python.org/cpython/rev/27f8ccce687d

New changeset 82b2ee140994 by Victor Stinner in branch 'default':
Issue #18408: PyObject_Call() now fails with an assertion error in debug mode
http://hg.python.org/cpython/rev/82b2ee140994

New changeset ef0dbe00760e by Victor Stinner in branch 'default':
Issue #18408: Don't check unicode consistency in _PyUnicode_HAS_UTF8_MEMORY()
http://hg.python.org/cpython/rev/ef0dbe00760e

New changeset c676fc74d779 by Victor Stinner in branch 'default':
Issue #18408: type_new() and PyType_FromSpecWithBases() now raise MemoryError
http://hg.python.org/cpython/rev/c676fc74d779

New changeset 9244e79c6e14 by Victor Stinner in branch 'default':
Issue #18408: random_seed() now raises a MemoryError on memory allocation
http://hg.python.org/cpython/rev/9244e79c6e14

New changeset 71a572a516f9 by Victor Stinner in branch 'default':
Issue #18408: Fix PyEval_EvalFrameEx() for MemoryError
http://hg.python.org/cpython/rev/71a572a516f9

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<http://bugs.python.org/issue18408>
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