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Created on 2020-10-22 19:08 by ejguan, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 23326 | merged | steve.dower, 2020-11-16 22:42 | |
| PR 23330 | merged | miss-islington, 2020-11-16 23:22 | |
| PR 23331 | merged | miss-islington, 2020-11-16 23:23 | |
| Messages (7) | |||
|---|---|---|---|
| msg379323 - (view) | Author: Erjia Guan (ejguan) | Date: 2020-10-22 19:08 | |
At https://github.com/python/cpython/blob/c60394c7fc9cc09b16e9675a3eeb5844b6d8523f/PC/pyconfig.h#L196, the MACRO converts copysign to _copysign. This MACRO is defined 13 years ago and it's really dangerous to define a lower-letter MACRO at this low level. Currently, MSVC is supporting copysign (https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/copysign-copysignf-copysignl-copysign-copysignf-copysignl?view=vs-2019). I am requesting to remove this MACRO, as my customized copysign API will also be converted to _copysign on MSVC platform. | |||
| msg379325 - (view) | Author: Steve Dower (steve.dower) *  | Date: 2020-10-22 19:30 | |
Sounds good, but I don't think we can backport it. It's not _our_ public API, but it's still going to impact compiling modules. Also, looking at the docs link above, copysign() is for floats and _copysign() is for doubles, which means it's an actual functional change. If POSIX/libc copysign() is floats, it's probably fine for a 3.10 change, but if we need to preserve the type then it needs to become _Py_copysign throughout. | |||
| msg379570 - (view) | Author: Ronald Oussoren (ronaldoussoren) * | Date: 2020-10-25 10:12 | |
The standard is for copysign to work on doubles, with copysignf as the same functionality for floats. https://en.cppreference.com/w/c/numeric/math/copysign | |||
| msg381174 - (view) | Author: Steve Dower (steve.dower) * | Date: 2020-11-16 22:44 | |
Turns out a straight delete is fine, as both names are defined in UCRT. I think it's safe to backport as well, since it's only going to affect other people's code poorly (and they'll need to recompile to see any change anyway). | |||
| msg381181 - (view) | Author: Steve Dower (steve.dower) * | Date: 2020-11-16 23:22 | |
New changeset 9cc9e277254023c0ca08e1a9e379fd89475ca9c2 by Steve Dower in branch 'master': bpo-42120: Remove macro defining copysign to _copysign on Windows (GH-23326) https://github.com/python/cpython/commit/9cc9e277254023c0ca08e1a9e379fd89475ca9c2 | |||
| msg381186 - (view) | Author: miss-islington (miss-islington) | Date: 2020-11-16 23:42 | |
New changeset 4f54ca07341c656b763c8c71a051f7f86a2a256c by Miss Islington (bot) in branch '3.8': bpo-42120: Remove macro defining copysign to _copysign on Windows (GH-23326) https://github.com/python/cpython/commit/4f54ca07341c656b763c8c71a051f7f86a2a256c | |||
| msg381217 - (view) | Author: miss-islington (miss-islington) | Date: 2020-11-17 07:50 | |
New changeset 2c38e49dba88a39679b2182ca3f5f478d3a3f647 by Miss Islington (bot) in branch '3.9': [3.9] bpo-42120: Remove macro defining copysign to _copysign on Windows (GH-23326) (GH-23331) https://github.com/python/cpython/commit/2c38e49dba88a39679b2182ca3f5f478d3a3f647 | |||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:37 | admin | set | github: 86286 |
| 2020-11-21 01:10:32 | steve.dower | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2020-11-17 07:50:52 | miss-islington | set | messages: + msg381217 |
| 2020-11-16 23:42:57 | miss-islington | set | messages: + msg381186 |
| 2020-11-16 23:23:45 | miss-islington | set | pull_requests: + pull_request22219 |
| 2020-11-16 23:22:58 | miss-islington | set | nosy: + miss-islington pull_requests: + pull_request22218 |
| 2020-11-16 23:22:50 | steve.dower | set | messages: + msg381181 |
| 2020-11-16 22:44:01 | steve.dower | set | assignee: steve.dower messages: + msg381174 versions: + Python 3.8, Python 3.9 |
| 2020-11-16 22:42:27 | steve.dower | set | keywords: + patch stage: patch review pull_requests: + pull_request22216 |
| 2020-10-25 10:12:48 | ronaldoussoren | set | nosy: + ronaldoussoren messages: + msg379570 |
| 2020-10-22 19:30:37 | steve.dower | set | messages: + msg379325 versions: - Python 3.8, Python 3.9 |
| 2020-10-22 19:22:25 | zach.ware | set | nosy: + paul.moore, tim.golden, zach.ware, steve.dower components: + Windows |
| 2020-10-22 19:09:58 | ejguan | set | versions: + Python 3.9, Python 3.10 |
| 2020-10-22 19:08:50 | ejguan | create | |