Description

serhiy-storchaka

opened on Oct 3, 2022

Issue body actions

If the getpath.joinpath() is called without arguments, it tries to return an empty string and calls PyUnicode_FromString(NULL) for this, which causes a crash. The correct way of creating an empty string is PyUnicode_FromStringAndSize(NULL, 0), or PyUnicode_FromString(""), or PyUnicode_FromStringAndSize("", 0).

Alternatively, the function could raise a TypeError instead of returning an empty string.

@zooba @vstinner

Activity

1. serhiy-storchaka

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

   on Oct 3, 2022
2. serhiy-storchaka

   added 2 commits that reference this issue on Oct 3, 2022

   pythongh-97758: Fix a crash in getpath_joinpath() called without argu…

   41a73a4

   gh-97758: Fix a crash in getpath_joinpath() called without arguments (G…

   f8cbd79
3. miss-islington

   added a commit that references this issue on Oct 5, 2022

   pythongh-97758: Fix a crash in getpath_joinpath() called without argu…

   024bc08
4. serhiy-storchaka

   closed this as completedon Oct 5, 2022
5. serhiy-storchaka

   added

   3.11only security fixesonly security fixes

   3.12only security fixesonly security fixes

   on Oct 5, 2022
6. miss-islington

   added a commit that references this issue on Oct 5, 2022

   gh-97758: Fix a crash in getpath_joinpath() called without arguments (G…

   73e3510
7. carljm

   added a commit that references this issue on Oct 6, 2022

   Merge branch 'main' into dictwatch

   4bb5d9d
8. mpage

   added a commit that references this issue on Oct 11, 2022

   pythongh-97758: Fix a crash in getpath_joinpath() called without argu…

   18523e0

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