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[Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops#13597

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eileencodes merged 1 commit intoruby:masterfrom
Shopify:uk-fix-splat-in-for
Jun 12, 2025
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[Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops#13597
eileencodes merged 1 commit intoruby:masterfrom
Shopify:uk-fix-splat-in-for

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This commit fixes a crash that occurred when using splat nodes (*) as the index variable in for loops. The error "Unexpected node type for index in for node: PM_SPLAT_NODE" was thrown because the compiler didn't know how to handle splat nodes in this context.

The fix allows code like for *x in [[1,2], [3,4]] to compile and execute correctly, where the splat collects each sub-array.

@paracycle paracycle changed the title [Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops [Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops Jun 12, 2025
This commit fixes a crash that occurred when using splat nodes (*) as
the index variable in for loops. The error "Unexpected node type for
index in for node: PM_SPLAT_NODE" was thrown because the compiler
didn't know how to handle splat nodes in this context.

The fix allows code like `for *x in [[1,2], [3,4]]` to compile and
execute correctly, where the splat collects each sub-array.
@paracycle paracycle force-pushed the uk-fix-splat-in-for branch from 6aa07ad to 369866b Compare June 12, 2025 14:32
@eileencodes eileencodes merged commit 5ec9a39 into ruby:master Jun 12, 2025
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@eileencodes eileencodes deleted the uk-fix-splat-in-for branch June 12, 2025 15:33
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Thank you!

sms021019 pushed a commit to sms021019/ruby that referenced this pull request Jun 17, 2025
…#13597)

[Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops

This commit fixes a crash that occurred when using splat nodes (*) as
the index variable in for loops. The error "Unexpected node type for
index in for node: PM_SPLAT_NODE" was thrown because the compiler
didn't know how to handle splat nodes in this context.

The fix allows code like `for *x in [[1,2], [3,4]]` to compile and
execute correctly, where the splat collects each sub-array.
k0kubun added a commit that referenced this pull request Jul 14, 2025
	[Bug #21439] Fix `PM_SPLAT_NODE` compilation error in for loops (#13597)

	[Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops

	This commit fixes a crash that occurred when using splat nodes (*) as
	the index variable in for loops. The error "Unexpected node type for
	index in for node: PM_SPLAT_NODE" was thrown because the compiler
	didn't know how to handle splat nodes in this context.

	The fix allows code like `for *x in [[1,2], [3,4]]` to compile and
	execute correctly, where the splat collects each sub-array.
Earlopain added a commit to Earlopain/ruby that referenced this pull request Oct 27, 2025
Fixes [Bug #21648]

This is a followup to ruby#13597.
This handled named splats, but also doesn't emit the same instructions that parse.y would.
It seemed to work regardless, now that case also emits the same instructions.
Earlopain added a commit to Earlopain/ruby that referenced this pull request Oct 27, 2025
Fixes [Bug #21648]

This is a followup to ruby#13597.
The added test passed but didn't emit the same instructions.

This also handles bare splats and aligns instructions for all cases
kddnewton pushed a commit that referenced this pull request Oct 27, 2025
Fixes [Bug #21648]

This is a followup to #13597.
The added test passed but didn't emit the same instructions.

This also handles bare splats and aligns instructions for all cases
k0kubun added a commit that referenced this pull request Dec 8, 2025
	[PATCH] Correctly compile splats in for-loop index in prism

	Fixes [Bug #21648]

	This is a followup to #13597.
	The added test passed but didn't emit the same instructions.

	This also handles bare splats and aligns instructions for all cases
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3 participants