Issue 37269: Python 3.8b1 miscompiles conditional expressions containing __debug__
Created on 2019-06-13 18:56 by mgedmin, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 14071 | merged | pablogsal, 2019-06-14 05:27 | |
| PR 14072 | merged | miss-islington, 2019-06-14 05:55 | |
| PR 14073 | merged | pablogsal, 2019-06-14 05:58 | |
| Messages (5) | |||
|---|---|---|---|
| msg345533 - (view) | Author: Marius Gedminas (mgedmin) * | Date: 2019-06-13 18:56 | |
Python 3.8 miscompiles the following code:
$ cat /tmp/wat.py
enable_debug = False
if not enable_debug or not __debug__:
print("you shall not pass!")
$ python3.7 /tmp/wat.py
you shall not pass!
$ python3.8 /tmp/wat.py
(no output is produced.)
This is a distilled example from zope.traversing's codebase (https://github.com/zopefoundation/zope.traversing/issues/13).
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| msg345552 - (view) | Author: Pablo Galindo Salgado (pablogsal) *  |
Date: 2019-06-14 05:55 | |
New changeset 05f831865545b08c9a21cfb7773af58b76ec64cb by Pablo Galindo in branch 'master': bpo-37269: Correctly optimise conditionals with constant booleans (GH-14071) https://github.com/python/cpython/commit/05f831865545b08c9a21cfb7773af58b76ec64cb |
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| msg345554 - (view) | Author: miss-islington (miss-islington) | Date: 2019-06-14 06:13 | |
New changeset 7cd581a6bf82309b3c9b9251c54067d442732485 by Miss Islington (bot) in branch '3.8': bpo-37269: Correctly optimise conditionals with constant booleans (GH-14071) https://github.com/python/cpython/commit/7cd581a6bf82309b3c9b9251c54067d442732485 |
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| msg345555 - (view) | Author: Pablo Galindo Salgado (pablogsal) * |
Date: 2019-06-14 06:18 | |
New changeset 5292179afc6fd0dc533add054d4790773c9766d0 by Pablo Galindo in branch '3.7': [3.7] bpo-37269: Correctly optimise conditionals with constant booleans (GH-14071) (GH-14073) https://github.com/python/cpython/commit/5292179afc6fd0dc533add054d4790773c9766d0 |
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| msg345556 - (view) | Author: Pablo Galindo Salgado (pablogsal) * |
Date: 2019-06-14 06:19 | |
Thanks, Marius for the report! |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:16 | admin | set | github: 81450 |
| 2019-06-14 06:19:13 | pablogsal | set | status: open -> closed resolution: fixed messages: + msg345556 stage: patch review -> resolved |
| 2019-06-14 06:18:54 | pablogsal | set | messages: + msg345555 |
| 2019-06-14 06:13:28 | miss-islington | set | nosy:
+ miss-islington messages: + msg345554 |
| 2019-06-14 05:58:22 | pablogsal | set | pull_requests: + pull_request13931 |
| 2019-06-14 05:55:26 | miss-islington | set | pull_requests: + pull_request13930 |
| 2019-06-14 05:55:00 | pablogsal | set | messages: + msg345552 |
| 2019-06-14 05:38:27 | pablogsal | set | nosy:
+ pablogsal |
| 2019-06-14 05:27:43 | pablogsal | set | keywords:
+ patch stage: patch review pull_requests: + pull_request13929 |
| 2019-06-13 18:56:04 | mgedmin | create | |