Commit05a19b5

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gh-120170: Exclude __mp_main__ in C version of whichmodule() (#120171)

Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>

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Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+Fix an issue in the:mod:`!_pickle` extension module in which importing
	`2`	+:mod:`multiprocessing` could change how pickle identifies which module an
	`3`	`+object belongs to, potentially breaking the unpickling of those objects.`

Lines changed: 4 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1879,6 +1879,10 @@ _checkmodule(PyObject module_name, PyObject module,`
`1879`	`1879`	`_PyUnicode_EqualToASCIIString(module_name,"__main__")) {`
`1880`	`1880`	`return-1;`
`1881`	`1881`	`}`
	`1882`	`+if (PyUnicode_Check(module_name)&&`
	`1883`	`+_PyUnicode_EqualToASCIIString(module_name,"__mp_main__")) {`
	`1884`	`+return-1;`
	`1885`	`+ }`
`1882`	`1886`
`1883`	`1887`	`PyObject*candidate=getattribute(module,dotted_path,0);`
`1884`	`1888`	`if (candidate==NULL) {`

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