➜
This issue tracker has been migrated to GitHub,
and is currently read-only.
For more information,
see the GitHub FAQs in the Python's Developer Guide.
Created on 2020-06-07 23:06 by stestagg, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 20701 | merged | pablogsal, 2020-06-08 00:09 | |
| PR 20702 | merged | miss-islington, 2020-06-08 00:48 | |
| Messages (4) | |||
|---|---|---|---|
| msg370923 - (view) | Author: Steve Stagg (stestagg) | Date: 2020-06-07 23:06 | |
The following command causes python to segfault:
$ echo "f'{yield}'" | python/bin/python3
Bisect tracked this down to:
c5fc15685202cda73f7c3f5c6f299b0945f58508 (bpo-40334: PEP 617 implementation: New PEG parser for CPython (GH-19503))
The illegal access is coming out of `fstring_shift_children_locations`
as n->v.Yield.value is None.
Correspondingly, the following produces the expected output:
$ echo "f'{yield 1}'" | python/bin/python3
Suggesting there's a missing check for no yield value in this code.
|
|||
| msg370942 - (view) | Author: Pablo Galindo Salgado (pablogsal) *  |
Date: 2020-06-08 00:47 | |
New changeset 972ab0327675e695373fc6272d5ac24e187579ad by Pablo Galindo in branch 'master': bpo-40904: Fix segfault in the new parser with f-string containing yield statements with no value (GH-20701) https://github.com/python/cpython/commit/972ab0327675e695373fc6272d5ac24e187579ad |
|||
| msg370943 - (view) | Author: Pablo Galindo Salgado (pablogsal) * |
Date: 2020-06-08 00:48 | |
Thanks, Steve for the report! |
|||
| msg370946 - (view) | Author: miss-islington (miss-islington) | Date: 2020-06-08 01:08 | |
New changeset 64409117361499058b1bf95e6efec31f7bb3c0d0 by Miss Islington (bot) in branch '3.9': bpo-40904: Fix segfault in the new parser with f-string containing yield statements with no value (GH-20701) https://github.com/python/cpython/commit/64409117361499058b1bf95e6efec31f7bb3c0d0 |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:32 | admin | set | github: 85081 |
| 2020-06-08 01:08:56 | miss-islington | set | nosy:
+ miss-islington messages: + msg370946 |
| 2020-06-08 00:48:33 | pablogsal | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2020-06-08 00:48:28 | pablogsal | set | nosy:
- miss-islington messages: + msg370943 |
| 2020-06-08 00:48:01 | miss-islington | set | nosy:
+ miss-islington pull_requests: + pull_request19917 |
| 2020-06-08 00:47:41 | pablogsal | set | messages: + msg370942 |
| 2020-06-08 00:09:49 | pablogsal | set | keywords:
+ patch stage: patch review pull_requests: + pull_request19916 |
| 2020-06-07 23:49:13 | vstinner | set | keywords:
+ 3.9regression versions: + Python 3.9 |
| 2020-06-07 23:48:59 | vstinner | set | nosy:
+ gvanrossum, lys.nikolaou, pablogsal |
| 2020-06-07 23:06:21 | stestagg | create | |