Fix overload oscillation for generic type arguments, tuples, and hashes#401
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mame merged 1 commit intoruby:masterfrom Feb 26, 2026
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Extend the uninformative-args bail-out in resolve_overloads to recursively check type parameter vertices (e.g., Array[T], Hash[K,V], tuples). Previously only top-level empty vertices and splat array element vertices were checked, missing cases like Foo.f([@x]) where @x is empty and overloads differ in the element type. To avoid false bail-outs for legitimate empty containers (e.g., {} passed to Hash#merge!), the recursive check is only applied when overloads actually differ in their positional parameter types. Overloads that differ only in blocks or keywords use the simpler top-level empty check.
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Extend the uninformative-args bail-out in resolve_overloads to recursively check type parameter vertices (e.g., Array[T], Hash[K,V], tuples). Previously only top-level empty vertices and splat array element vertices were checked, missing cases like Foo.f([@x]) where @x is empty and overloads differ in the element type.
To avoid false bail-outs for legitimate empty containers (e.g., {} passed to Hash#merge!), the recursive check is only applied when overloads actually differ in their positional parameter types. Overloads that differ only in blocks or keywords use the simpler top-level empty check.