Bug #21038: Preserve `errno` in `rb_fiber_scheduler_unblock`

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE, 3.4: REQUIRED

[ioquatix (Samuel Williams)]

rb_fiber_scheduler_unblock can invoke user code that can affect errno, and at least in io_binwrite, this is unexpected. Whether io_binwrite should be fixed is a separate issue (it probably should be, as errno is not explicitly preserved or documented how it is preserved).

See https://github.com/socketry/io-event/issues/127 for more discussion.

• Status changed from Open to Closed

Applied in changeset git|04ec07794657cd2444ecb001a522b9df2db1b90a.

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Preserve errno in rb_fiber_scheduler_unblock. (#12576)

[Bug #21038]

Co-authored-by: Julian Scheid [e-mail]

[ioquatix (Samuel Williams)]

• Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN to 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED

[k0kubun (Takashi Kokubun)]

• Backport changed from 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED to 3.1: REQUIRED, 3.2: REQUIRED, 3.3: DONE, 3.4: REQUIRED

ruby_3_3 commit:02bcfb42be7ca97fa40c6efa2f03ddff66c9257c merged revision(s) 04ec07794657cd2444ecb001a522b9df2db1b90a.