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b17e6680d6
Fixes #109543. When checking paths in HIR typeck, we don't want to check for const predicates since all we want might just be a function pointer. Therefore we move this to MIR constck and check that bounds are met during MIR constck.
47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
error[E0277]: the trait bound `[closure@$DIR/issue-56164.rs:1:19: 1:21]: Fn<()>` is not satisfied
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--> $DIR/issue-56164.rs:1:18
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LL | const fn foo() { (||{})() }
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| ^^^^^^^^ expected an `Fn<()>` closure, found `[closure@$DIR/issue-56164.rs:1:19: 1:21]`
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= help: the trait `~const Fn<()>` is not implemented for closure `[closure@$DIR/issue-56164.rs:1:19: 1:21]`
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note: the trait `Fn<()>` is implemented for `[closure@$DIR/issue-56164.rs:1:19: 1:21]`, but that implementation is not `const`
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--> $DIR/issue-56164.rs:1:18
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LL | const fn foo() { (||{})() }
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| ^^^^^^^^
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= note: wrap the `[closure@$DIR/issue-56164.rs:1:19: 1:21]` in a closure with no arguments: `|| { /* code */ }`
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error[E0015]: cannot call non-const closure in constant functions
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--> $DIR/issue-56164.rs:1:18
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LL | const fn foo() { (||{})() }
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| ^^^^^^^^
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= note: closures need an RFC before allowed to be called in constant functions
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= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
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= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
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error: function pointer calls are not allowed in constant functions
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--> $DIR/issue-56164.rs:6:5
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LL | input()
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| ^^^^^^^
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note: erroneous constant used
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--> $DIR/issue-56164.rs:1:18
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LL | const fn foo() { (||{})() }
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| ^^^^^^
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note: erroneous constant used
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--> $DIR/issue-56164.rs:1:18
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LL | const fn foo() { (||{})() }
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| ^^^^^^
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0015, E0277.
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For more information about an error, try `rustc --explain E0015`.
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