rust/tests/ui/generics/issue-83556.rs

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struct Foo<T, 'a>(&'a ());
//~^ ERROR lifetime parameters must be declared prior to

fn main() {}
diagnostics: avoid mismatch between variance index and hir generic This happens because variances are constructed from ty generics, and ty generics are always constructed with lifetimes first. See compiler/rustc_hir_analysis/src/collect/generics_of.rs:248-269 Fixes #83556 2023-09-22 08:14:58 +08:00			`struct Foo<T, 'a>(&'a ());`
			`//~^ ERROR lifetime parameters must be declared prior to`

			`fn main() {}`