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164ac421d6
An early approach to codegen for `#_hasSymbol` relied on the Darwin platfom SDK, but now that the feature lowers directly to NULL checks in LLVM IR a platform restriction is no longer needed. However, the tests for `#_hasSymbol` remain unsupported on Windows since that OS does not support weak linking.
48 lines
1.7 KiB
Swift
48 lines
1.7 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: %target-swift-frontend -emit-module -emit-module-path %t/Library.swiftmodule -parse-as-library %t/Library.swift -enable-library-evolution
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// RUN: %target-swift-frontend -typecheck -verify %t/Client.swift -I %t
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// UNSUPPORTED: OS=windows-msvc
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//--- Library.swift
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public func foo() {}
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public func bar() {}
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//--- Client.swift
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@_weakLinked import Library
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if #_hasSymbol(foo) {}
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if #_hasSymbol(foo), #_hasSymbol(bar) {}
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guard #_hasSymbol(foo) else { fatalError() }
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while #_hasSymbol(foo) {}
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if #_hasSymbol(foo) == false {} // expected-error {{expected '{' after 'if' condition}}
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_ = #_hasSymbol(foo) {} // expected-error {{#_hasSymbol may only be used as condition of}}
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(#_hasSymbol(foo) ? 1 : 0) // expected-error {{#_hasSymbol may only be used as condition of}}
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if !#_hasSymbol(foo) {} // expected-error {{#_hasSymbol may only be used as condition of}}
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if let _ = Optional(5), !#_hasSymbol(foo) {} {} // expected-error {{#_hasSymbol may only be used as condition of}}
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if #_hasSymbol {} // expected-error {{expected '(' in #_hasSymbol directive}}
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// expected-error@+3 {{expected ')' in #_hasSymbol condition}}
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// expected-error@+2 {{expected '{' after 'if' condition}}
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// expected-note@+1 {{to match this opening '('}}
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if #_hasSymbol(struct) {} // expected-error {{expected expression in #_hasSymbol}}
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// expected-error@+3 {{expected ')' in #_hasSymbol condition}}
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// expected-error@+2 {{expected '{' after 'if' condition}}
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// expected-note@+1 {{to match this opening '('}}
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if #_hasSymbol(foo bar) {}
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// expected-error@+2 {{expected ')' in #_hasSymbol condition}}
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// expected-note@+1 {{to match this opening '('}}
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if #_hasSymbol(foo {}
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