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swift-mirror/test/stdlib/TestCharacterSet.swift
Gregory Todd Williams 09ed106f25 [stdlib] Don't try to construct invalid UnicodeScalars in CharacterSet 
Inserting and removing a single Unicode.Scalar in a CharacterSet must not
attempt to create a Range<Unicode.Scalar> because the upperBound value might
not always be a valid UnicodeScalar.

This fixes a regression to the fix for SR-2988.
2018-01-02 10:07:28 -08:00

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