diff options
| -rw-r--r-- | compiler/rustc_typeck/src/expr_use_visitor.rs | 15 | ||||
| -rw-r--r-- | src/test/ui/closures/2229_closure_analysis/issue-87426.rs | 14 |
2 files changed, 26 insertions, 3 deletions
diff --git a/compiler/rustc_typeck/src/expr_use_visitor.rs b/compiler/rustc_typeck/src/expr_use_visitor.rs index 6c76a8960bb..1d7852d964c 100644 --- a/compiler/rustc_typeck/src/expr_use_visitor.rs +++ b/compiler/rustc_typeck/src/expr_use_visitor.rs @@ -267,12 +267,21 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> { } } } - PatKind::Lit(_) => { - // If the PatKind is a Lit then we want + PatKind::Lit(_) | PatKind::Range(..) => { + // If the PatKind is a Lit or a Range then we want // to borrow discr. needs_to_be_read = true; } - _ => {} + PatKind::Or(_) + | PatKind::Box(_) + | PatKind::Slice(..) + | PatKind::Ref(..) + | PatKind::Wild => { + // If the PatKind is Or, Box, Slice or Ref, the decision is made later + // as these patterns contains subpatterns + // If the PatKind is Wild, the decision is made based on the other patterns being + // examined + } } })); } diff --git a/src/test/ui/closures/2229_closure_analysis/issue-87426.rs b/src/test/ui/closures/2229_closure_analysis/issue-87426.rs new file mode 100644 index 00000000000..74506979a28 --- /dev/null +++ b/src/test/ui/closures/2229_closure_analysis/issue-87426.rs @@ -0,0 +1,14 @@ +// run-pass +// edition:2021 + +pub fn foo() { + let ref_x_ck = 123; + let _y = || match ref_x_ck { + 2_000_000..=3_999_999 => { println!("A")} + _ => { println!("B")} + }; +} + +fn main() { + foo(); +} |