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Guard Packer buffer protocol hooks with Cython critical sections (#686)

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Copilot 2026-06-03 16:22:40 +09:00 • committed by GitHub
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msgpack/_packer.pyx
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@ -360,9 +360,11 @@ cdef class Packer:
"""
return memoryview(self)
@cython.critical_section
def __getbuffer__(self, Py_buffer *buffer, int flags):
PyBuffer_FillInfo(buffer, self, self.pk.buf, self.pk.length, 1, flags)
self.exports += 1
@cython.critical_section
def __releasebuffer__(self, Py_buffer *buffer):
self.exports -= 1