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31aa2f77e3
- replaces "move-only" terminology with "noncopyable" - replaces compiler jargon like "guaranteed parameters" and "lvalue" with corresponding language-level notions - simplifies diagnostics about closures. and probably more. rdar://109281444
45 lines
1.5 KiB
Swift
45 lines
1.5 KiB
Swift
// RUN: %target-typecheck-verify-swift
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// this test verifies what features are still behind the experimental flag by not providing it.
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struct SomeValue {}
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@_moveOnly class NoncopyableClass {} // expected-error {{'@_moveOnly' attribute is only valid on structs or enums}}
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func checkOldConsumeName() {
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let x = SomeValue()
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let _ = _move x // expected-error {{cannot find '_move' in scope}}
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// expected-error@-1 {{consecutive statements on a line must be separated by ';'}}
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// expected-warning@-2 {{expression of type 'SomeValue' is unused}}
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}
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func checkBorrow() {
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let x = SomeValue()
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let _ = _borrow x // expected-error {{cannot find '_borrow' in scope}}
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// expected-error@-1 {{consecutive statements on a line must be separated by ';'}}
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// expected-warning@-2 {{expression of type 'SomeValue' is unused}}
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}
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func checkNoImplicitCopy1(@_noImplicitCopy x: SomeValue) {}
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// expected-error@-1 {{Can not use feature when experimental move only is disabled! Pass the frontend flag -enable-experimental-move-only to swift to enable the usage of this language feature}}
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func checkNoImplicitCopy2(_ x: SomeValue) {
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@_noImplicitCopy let y = x
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// expected-error@-1 {{Can not use feature when experimental move only is disabled! Pass the frontend flag -enable-experimental-move-only to swift to enable the usage of this language feature}}
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checkNoImplicitCopy2(y)
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}
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// coverage to ensure the feature flag is working
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#if $MoveOnly
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func guardedFn() {}
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#endif
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func caller() {
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guardedFn()
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}
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