Description

chgnrdv

opened on May 7, 2023

Issue body actions

The accepted way to create these objects is to use constructor functions _csv.reader() and _csv.writer() with appropriate arguments. Objects that are created through type constructors _csv.Reader and _csv.Writer turn out to be not properly initialized, and operations on them easily lead to crash:

>>> import _csv
>>> _csv.Writer().writerow([])
Segmentation fault (core dumped)

>>> import _csv
>>> list(_csv.Reader())
Segmentation fault (core dumped)

Although this is an internal detail, I'm sure that this should be fixed. I'll submit a PR shortly.
The crash appears on 3.10, 3.11 and current main.

Linked PRs

• gh-104265 Disallow instantiation of _csv.Reader and _csv.Writer #104266
• [3.11] gh-104265 Disallow instantiation of _csv.Reader and _csv.Writer (GH-104266) #104278

Reacted by Kirill Podoprigora and Erlend E. Aasland

Activity

1. chgnrdv

   added

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

   on May 7, 2023
2. erlend-aasland

   closed this as completedin #104266on May 7, 2023
3. erlend-aasland

   added a commit that references this issue on May 7, 2023

   gh-104265 Disallow instantiation of `_csv.Reader` and `_csv.Writer` (#…

   06c2a48
4. miss-islington

   added a commit that references this issue on May 7, 2023

   pythongh-104265 Disallow instantiation of `_csv.Reader` and `_csv.Wri…

   0a7ec7e
5. kumaraditya303

   added a commit that references this issue on May 8, 2023

   [3.11] gh-104265 Disallow instantiation of `_csv.Reader` and `_csv.Wr…

   065e2ae
6. jbower-fb

   added a commit that references this issue on May 8, 2023

   pythongh-104265 Disallow instantiation of `_csv.Reader` and `_csv.Wri…

   8e76e2d
7. carljm

   added a commit that references this issue on May 9, 2023

   Merge branch 'main' into inlinecomp2

   76077cd

Issue actions