8000 [Bug #21439] Fix `PM_SPLAT_NODE` compilation error in for loops by paracycle · Pull Request #13597 · ruby/ruby · GitHub
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[Bug #21439] Fix PM_SPLAT_NODE compilation error in for loops #13597

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Merged
merged 1 commit into from
Jun 12, 2025

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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!

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