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``` error: `S2<'_>` is forbidden as the type of a const generic parameter --> $DIR/lifetime-in-const-param.rs:5:23 | LL | struct S<'a, const N: S2>(&'a ()); | ^^ | = note: the only supported types are integers, `bool` and `char` help: add `#![feature(adt_const_params)]` to the crate attributes to enable more complex and user defined types | LL + #![feature(adt_const_params)] | ``` Fix #55941.
36 lines
951 B
Rust
36 lines
951 B
Rust
// Regression test for issue #90870.
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#![allow(dead_code)]
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const fn f(a: &u8, b: &u8) -> bool {
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//~^ HELP: add `#![feature(const_trait_impl)]`
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//~| HELP: add `#![feature(const_trait_impl)]`
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//~| HELP: add `#![feature(const_trait_impl)]`
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a == b
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//~^ ERROR: cannot call non-const operator in constant functions [E0015]
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//~| HELP: consider dereferencing here
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}
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const fn g(a: &&&&i64, b: &&&&i64) -> bool {
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a == b
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//~^ ERROR: cannot call non-const operator in constant functions [E0015]
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//~| HELP: consider dereferencing here
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}
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const fn h(mut a: &[u8], mut b: &[u8]) -> bool {
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while let ([l, at @ ..], [r, bt @ ..]) = (a, b) {
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if l == r {
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//~^ ERROR: cannot call non-const operator in constant functions [E0015]
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//~| HELP: consider dereferencing here
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a = at;
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b = bt;
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} else {
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return false;
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}
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}
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a.is_empty() && b.is_empty()
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}
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fn main() {}
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