Core and Builtins
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-- Issue #14432: Generator now clears the borrowed reference to the thread
- state. Fix a crash when a generator is created in a C thread that is
- destroyed while the generator is still used. The issue was that a generator
- contains a frame, and the frame kept a reference to the Python state of the
- destroyed C thread. The crash occurs when a trace function is setup.
+ - Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c"
+ argument is not in range [0; 255].
+
+- Issue #19787: PyThread_set_key_value() now always set the value. In Python
+ 3.3, the function did nothing if the key already exists (if the current value
+ is a non-NULL pointer).
+
+- Issue #14432: Remove the thread state field from the frame structure. Fix a
+ crash when a generator is created in a C thread that is destroyed while the
+ generator is still used. The issue was that a generator contains a frame, and
+ the frame kept a reference to the Python state of the destroyed C thread. The
+ crash occurs when a trace function is setup.
+
+- Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python
+ has no concrete GIL. If PyGILState_Ensure() is called from a new thread for
+ the first time and PyEval_InitThreads() was not called yet, a GIL needs to be
+ created.
- Issue #17576: Deprecation warning emitted now when __int__() or __index__()
return not int instance.