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bpo-43693: Un-revert commits 2c1e258 and b2bf2bc. (gh-26577)

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These were reverted in gh-26530 (commit 17c4edc) due to refleaks.

* 2c1e258 - Compute deref offsets in compiler (gh-25152)
* b2bf2bc - Add new internal code objects fields: co_fastlocalnames and co_fastlocalkinds. (gh-26388)

This change fixes the refleaks.

https://bugs.python.org/issue43693
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Eric Snow 2021-06-07 12:22:26 -06:00 • committed by GitHub
parent 001eb520b5
commit 2ab27c4af4
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23 changed files with 6044 additions and 5710 deletions
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Doc/library/dis.rst
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@ -1058,17 +1058,24 @@ All of the following opcodes use their arguments.
.. opcode:: LOAD_CLOSURE (i)
Pushes a reference to the cell contained in slot *i* of the cell and free
variable storage. The name of the variable is ``co_cellvars[i]`` if *i* is
less than the length of *co_cellvars*. Otherwise it is ``co_freevars[i -
len(co_cellvars)]``.
Pushes a reference to the cell contained in slot ``i`` of the "fast locals"
storage. The name of the variable is ``co_fastlocalnames[i]``.
Note that ``LOAD_CLOSURE`` is effectively an alias for ``LOAD_FAST``.
It exists to keep bytecode a little more readable.
.. versionchanged:: 3.11
``i`` is no longer offset by the length of ``co_varnames``.
.. opcode:: LOAD_DEREF (i)
Loads the cell contained in slot *i* of the cell and free variable storage.
Loads the cell contained in slot ``i`` of the "fast locals" storage.
Pushes a reference to the object the cell contains on the stack.
.. versionchanged:: 3.11
``i`` is no longer offset by the length of ``co_varnames``.
.. opcode:: LOAD_CLASSDEREF (i)
@ -1078,20 +1085,29 @@ All of the following opcodes use their arguments.
.. versionadded:: 3.4
.. versionchanged:: 3.11
``i`` is no longer offset by the length of ``co_varnames``.
.. opcode:: STORE_DEREF (i)
Stores TOS into the cell contained in slot *i* of the cell and free variable
Stores TOS into the cell contained in slot ``i`` of the "fast locals"
storage.
.. versionchanged:: 3.11
``i`` is no longer offset by the length of ``co_varnames``.
.. opcode:: DELETE_DEREF (i)
Empties the cell contained in slot *i* of the cell and free variable storage.
Empties the cell contained in slot ``i`` of the "fast locals" storage.
Used by the :keyword:`del` statement.
.. versionadded:: 3.2
.. versionchanged:: 3.11
``i`` is no longer offset by the length of ``co_varnames``.
.. opcode:: RAISE_VARARGS (argc)