[codex] Handle nil subset lists without panics#1918

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kmg0308 wants to merge 1 commit into

stretchr:masterfrom

kmg0308:codex/small-improvement-20260629

kmg0308 commented Jun 29, 2026

Summary

Make Subset and NotSubset fail cleanly for nil list inputs and fix unsupported-type error formatting.

Validation

targeted Go tests, full go test ./..., and selected benchmarks passed in Docker.

Notes

Opened as a draft PR for maintainer review.


          Handle nil subset lists without panics

67dc131

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