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11 lines
360 B
Swift
11 lines
360 B
Swift
// RUN: %target-swift-frontend %s -parse -verify
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// Distributed under the terms of the MIT license
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// Test case submitted to project by https://github.com/tmu (Teemu Kurppa)
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// rdar://18175202
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func d<b: Sequence, e where Optional<e> == b.Iterator.Element>(c : b) -> e? {
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for mx : e? in c { // expected-warning {{immutable value 'mx' was never used}}
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}
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}
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