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bpo-42990: Functions inherit current builtins (GH-24564) #393

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Merged
merged 1 commit into from
Feb 20, 2021

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@sthagen sthagen commented Feb 20, 2021

The types.FunctionType constructor now inherits the current builtins
if the globals dictionary has no "builtins" key, rather than
using {"None": None} as builtins: same behavior as eval() and exec()
functions.

Defining a function with "def function(...): ..." in Python is not
affected, globals cannot be overriden with this syntax: it also
inherits the current builtins.

PyFrame_New(), PyEval_EvalCode(), PyEval_EvalCodeEx(),
PyFunction_New() and PyFunction_NewWithQualName() now inherits the
current builtins namespace if the globals dictionary has no
"builtins" key.

  • Add _PyEval_GetBuiltins() function.
  • _PyEval_BuiltinsFromGlobals() now uses _PyEval_GetBuiltins() if
    builtins cannot be found in globals.
  • Add tstate parameter to _PyEval_BuiltinsFromGlobals().

The types.FunctionType constructor now inherits the current builtins
if the globals dictionary has no "__builtins__" key, rather than
using {"None": None} as builtins: same behavior as eval() and exec()
functions.

Defining a function with "def function(...): ..." in Python is not
affected, globals cannot be overriden with this syntax: it also
inherits the current builtins.

PyFrame_New(), PyEval_EvalCode(), PyEval_EvalCodeEx(),
PyFunction_New() and PyFunction_NewWithQualName() now inherits the
current builtins namespace if the globals dictionary has no
"__builtins__" key.

* Add _PyEval_GetBuiltins() function.
* _PyEval_BuiltinsFromGlobals() now uses _PyEval_GetBuiltins() if
  builtins cannot be found in globals.
* Add tstate parameter to _PyEval_BuiltinsFromGlobals().
@sthagen sthagen merged commit eb61dd5 into sthagen:master Feb 20, 2021
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2 participants