Description

youknowone

opened on Aug 13, 2022

Issue body actions

std::time::Duration::from_secs_f64 behavior is changed in Rust 1.63.

related python test:

• test_os::test_utime_by_indexed
• test_os::test_utime_by_times

test command:

• cargo +stable run Lib/test/test_os.py -k utime -v
• cargo +1.62.1 run Lib/test/test_os.py -k utime -v

Rust issue including minimal reproducible code

• std::time::Duration::from_secs_f64 behavior changed in 1.63.0 rust-lang/rust#100480

To-do

We will stay on 1.62.1 until checking if it is a rust bug or intended change.

Once it is resolved:

• Revert CI changes set CI toolchain to 1.62.1 #4046

Reacted by Copilot

Activity

1. youknowone

   added

   C-bugSomething isn't workingSomething isn't working

   on Aug 13, 2022
2. youknowone commented on Aug 13, 2022

   

   youknowone

   on Aug 13, 2022

   MemberAuthor

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   In CPython, _PyTime_DoubleToDenominator provides rounding option. floor option is passed for this path.
3. youknowone commented on Aug 17, 2022

   

   youknowone

   on Aug 17, 2022

   MemberAuthor

   More actions

   It was an intended behavior change from Rust. we need to implement rounding option like cpython.
4. youknowone

   assigned

   Copilot

   and

   youknowone

   on Dec 25, 2025
5. youknowone commented on Dec 25, 2025

   

   youknowone

   on Dec 25, 2025

   MemberAuthor

   More actions

   The test is changed not to check nanosecond drift #6501
6. youknowone

   closed this as completedon Dec 25, 2025

Issue actions