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90a20ea015
When this initializer is invoked with an integer literal, the expression is ambiguous, since both UIn32 and Float are RepresentableByIntegerLiteral. Fixes: https://bugs.swift.org/browse/SR-5176
86 lines
2.5 KiB
Swift
86 lines
2.5 KiB
Swift
// RUN: %target-build-swift %s -swift-version 3 -typecheck
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// RUN: %target-build-swift %s -swift-version 4 -typecheck
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func byteswap_n(_ a: UInt64) -> UInt64 {
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#if swift(>=4)
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return ((a & 0x00000000000000FF) &<< 56) |
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((a & 0x000000000000FF00) &<< 40) |
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((a & 0x0000000000FF0000) &<< 24) |
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((a & 0x00000000FF000000) &<< 8) |
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((a & 0x000000FF00000000) &>> 8) |
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((a & 0x0000FF0000000000) &>> 24) |
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((a & 0x00FF000000000000) &>> 40) |
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((a & 0xFF00000000000000) &>> 56)
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#else
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return ((a & 0x00000000000000FF) << 56) |
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((a & 0x000000000000FF00) << 40) |
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((a & 0x0000000000FF0000) << 24) |
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((a & 0x00000000FF000000) << 8) |
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((a & 0x000000FF00000000) >> 8) |
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((a & 0x0000FF0000000000) >> 24) |
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((a & 0x00FF000000000000) >> 40) |
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((a & 0xFF00000000000000) >> 56)
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#endif
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}
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// expression should not be too complex
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func radar31845712(_ i: Int, _ buffer: [UInt8]) {
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#if swift(>=4)
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_ = UInt64(buffer[i])
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| (UInt64(buffer[i + 1]) &<< 8)
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| (UInt64(buffer[i + 2]) &<< 16)
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| (UInt64(buffer[i + 3]) &<< 24)
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| (UInt64(buffer[i + 4]) &<< 32)
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| (UInt64(buffer[i + 5]) &<< 40)
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| (UInt64(buffer[i + 6]) &<< 48)
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| (UInt64(buffer[i + 7]) &<< 56)
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#else
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_ = UInt64(buffer[i])
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| (UInt64(buffer[i + 1]) << 8)
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| (UInt64(buffer[i + 2]) << 16)
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| (UInt64(buffer[i + 3]) << 24)
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| (UInt64(buffer[i + 4]) << 32)
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| (UInt64(buffer[i + 5]) << 40)
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| (UInt64(buffer[i + 6]) << 48)
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| (UInt64(buffer[i + 7]) << 56)
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#endif
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}
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// expression should not be too complex
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func radar32149641() {
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func from(bigEndian input: UInt32) -> UInt32 {
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var val: UInt32 = input
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return withUnsafePointer(to: &val) { (ptr: UnsafePointer<UInt32>) -> UInt32 in
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return ptr.withMemoryRebound(to: UInt8.self, capacity: 4) { data in
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#if swift(>=4)
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return (UInt32(data[3]) &<< 0) |
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(UInt32(data[2]) &<< 8) |
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(UInt32(data[1]) &<< 16) |
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(UInt32(data[0]) &<< 24)
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#else
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return (UInt32(data[3]) << 0) |
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(UInt32(data[2]) << 8) |
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(UInt32(data[1]) << 16) |
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(UInt32(data[0]) << 24)
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#endif
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}
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}
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}
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}
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func homogeneousLookingShiftAndAMask(_ i64: Int64) {
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_ = (i64 >> 8) & 0xFF
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}
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#if swift(>=4)
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func negativeShift(_ u8: UInt8) {
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_ = (u8 << -1)
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}
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#endif
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func sr5176(description: String = "unambiguous Int32.init(bitPattern:)") {
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_ = Int32(bitPattern: 0) // should compile without ambiguity
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}
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