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Merge pull request #20667 from ChayimFriedman2/ns-cleanup2
internal: Add Regression Test For The One And The Only Issue #5514
| -rw-r--r-- | crates/hir-ty/src/tests/regression/new_solver.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/crates/hir-ty/src/tests/regression/new_solver.rs b/crates/hir-ty/src/tests/regression/new_solver.rs index f559230fee..82d670cef2 100644 --- a/crates/hir-ty/src/tests/regression/new_solver.rs +++ b/crates/hir-ty/src/tests/regression/new_solver.rs @@ -129,6 +129,40 @@ trait T2: Sized { } #[test] +fn regression_type_checker_does_not_eagerly_select_predicates_from_where_clauses() { + // This was a very long standing issue (#5514) with a lot of duplicates, that was + // fixed by the switch to the new trait solver, so it deserves a long name and a + // honorable mention. + check_infer( + r#" +//- minicore: from + +struct Foo; +impl Foo { + fn method(self) -> i32 { 0 } +} + +fn f<T: Into<Foo>>(u: T) { + let x = u.into(); + x.method(); +} + "#, + expect![[r#" + 38..42 'self': Foo + 51..56 '{ 0 }': i32 + 53..54 '0': i32 + 79..80 'u': T + 85..126 '{ ...d(); }': () + 95..96 'x': Foo + 99..100 'u': T + 99..107 'u.into()': Foo + 113..114 'x': Foo + 113..123 'x.method()': i32 + "#]], + ); +} + +#[test] fn opaque_generics() { check_infer( r#" |