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Fix SEGV on RBS::Location#[] without Symbol arg #2811

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Fix SEGV on RBS::Location#[] without Symbol arg #2811

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@ksss ksss commented Jan 19, 2026

Passing an argument other than a symbol to RBS::Location#[] crashes.
If the argument is not a symbol, a TypeError exception is raised.

Repro:

$ bundle exec ruby -r rbs -e 'RBS::Parser.parse_type("Integer").location["aaa"]'

@ksss ksss added this to the RBS 4.0 milestone Jan 19, 2026
@ksss ksss mentioned this pull request Jan 19, 2026
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