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//@ known-bug: #140123
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//@ compile-flags: --crate-type lib
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const OK: [&mut [()]; 2] = [empty_mut(), empty_mut()];
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const ICE: [&mut [()]; 2] = [const { empty_mut() }; 2];
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// Any kind of fn call gets around E0764.
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const fn empty_mut() -> &'static mut [()] {
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&mut []
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}
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