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On Windows, `GUID` is a currency type and (along with its various typedefs) is used pervasively Windows offers `IsEqualGUID()` and `UuidHash()` for comparing and hashing them, respectively, but `IsEqualGUID()` is a macro in C mode and `UuidHash()` only provides a 16-bit hash. We should provide conformance to these protocols in the WinSDK overlay to provide equivalent functionality in Swift.
23 lines
570 B
Swift
23 lines
570 B
Swift
// RUN: %target-build-swift %s -o %t.exe
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// RUN: %target-codesign %t.exe
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// RUN: %target-run %t.exe
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// REQUIRES: executable_test
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// REQUIRES: OS=windows-msvc
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// Make sure that importing WinSDK brings in the GUID type, which is declared in
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// /shared and not in /um.
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import WinSDK
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public func usesGUID(_ x: GUID) {}
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// Make sure equating and hashing GUIDs works.
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let guid: GUID = GUID_NULL
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assert(guid == guid)
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assert(guid.hashValue == guid.hashValue)
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let guid2: GUID = IID_IUnknown
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assert(guid != guid2)
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assert(guid.hashValue != guid2.hashValue) // well, probably
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