[New-bugs-announce] [issue46409] Add a new bytecode instruction to create generators

[Mark Shannon]

New submission from Mark Shannon <mark at hotpy.org>:

(including coroutines, and async generators)

We now make the start and resumption of Python functions explicit in the bytecode which allows us to initialize frames in the bytecode without exposing incomplete frames tracing, the GC etc.
However, we still expose incomplete frames when creating generators.

By making the creation of generators explicit in the bytecode we first create the frame, then the generator and all is well.

See https://bugs.python.org/issue46374 and https://bugs.python.org/issue46389 for examples.

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assignee: Mark.Shannon
components: Interpreter Core
messages: 410764
nosy: Mark.Shannon
priority: normal
severity: normal
status: open
title: Add a new bytecode instruction to create generators
type: behavior
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46409>
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