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4aa0008d74
This implements support for autoclosures, closures and local functions nested within a pack iteration for loop. The combination of explicit closure expressions and pack expansion expressions still needs some work. Fixes #66917. Fixes #69947. Fixes rdar://113505724. Fixes rdar://122293832. Fixes rdar://124329076.
16 lines
397 B
Swift
16 lines
397 B
Swift
// RUN: %target-swift-frontend -emit-ir %s
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func withPointerToElements<each T, E, R>(
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of tuple: borrowing (repeat each T),
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_ body: (UnsafeBufferPointer<E>) -> R
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) -> R {
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for t in repeat (each T).self {
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if t != E.self {
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preconditionFailure()
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}
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}
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return withUnsafeBytes(of: tuple) { p in
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return body(p.assumingMemoryBound(to: E.self))
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}
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}
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