49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
// compile-flags: -Zdeduplicate-diagnostics=yes
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use std::mem::size_of;
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fn test<const N: usize>() {}
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fn ok<const M: usize>() -> [u8; M] {
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[0; { M }]
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}
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struct Break0<const N: usize>([u8; { N + 1 }]);
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//~^ ERROR generic parameters may not be used in const operations
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struct Break1<const N: usize>([u8; { { N } }]);
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//~^ ERROR generic parameters may not be used in const operations
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fn break2<const N: usize>() {
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let _: [u8; N + 1];
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//~^ ERROR generic parameters may not be used in const operations
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}
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fn break3<const N: usize>() {
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let _ = [0; N + 1];
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//~^ ERROR generic parameters may not be used in const operations
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}
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struct BreakTy0<T>(T, [u8; { size_of::<*mut T>() }]);
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//~^ ERROR generic parameters may not be used in const operations
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struct BreakTy1<T>(T, [u8; { { size_of::<*mut T>() } }]);
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//~^ ERROR generic parameters may not be used in const operations
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fn break_ty2<T>() {
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let _: [u8; size_of::<*mut T>() + 1];
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//~^ ERROR generic parameters may not be used in const operations
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}
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fn break_ty3<T>() {
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let _ = [0; size_of::<*mut T>() + 1];
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//~^ WARN cannot use constants which depend on generic parameters in types
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//~| WARN this was previously accepted by the compiler but is being phased out
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}
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trait Foo {
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const ASSOC: usize;
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}
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fn main() {}
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