bpo-38140: Make dict and weakref offsets opaque for C heap types #16076
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DinoV
approved these changes
Sep 14, 2019
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@DinoV: Please replace |
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This makes
tp_dictoffsetandtp_weaklistoffsetcompletely opaque for C heap allocated types created through PyType_FromSpec.The type system already provides a way to pass in readonly primitive types. This uses that mechanism to pass in the offset values through the two keywords:
__dictoffset__and__weaklistoffset__. This then extends the type system to sniff for these values to set the offsets into the type.To provide uniformity, the passed in member types are required to have a
T_PYSSIZETas well as beingREADONLYhttps://bugs.python.org/issue38140