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Diffstat (limited to 'crates/hir-ty/src/diagnostics/expr.rs')
| -rw-r--r-- | crates/hir-ty/src/diagnostics/expr.rs | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/crates/hir-ty/src/diagnostics/expr.rs b/crates/hir-ty/src/diagnostics/expr.rs index 0c5d639961..571f01dde2 100644 --- a/crates/hir-ty/src/diagnostics/expr.rs +++ b/crates/hir-ty/src/diagnostics/expr.rs @@ -338,7 +338,13 @@ impl ExprValidator { fn check_for_unnecessary_else(&mut self, id: ExprId, expr: &Expr, body: &Body) { if let Expr::If { condition: _, then_branch, else_branch } = expr { - if else_branch.is_none() { + if let Some(else_branch) = else_branch { + // If else branch has a tail, it is an "expression" that produces a value, + // e.g. `let a = if { ... } else { ... };` and this `else` is not unnecessary + if let Expr::Block { tail: Some(_), .. } = body.exprs[*else_branch] { + return; + } + } else { return; } if let Expr::Block { statements, tail, .. } = &body.exprs[*then_branch] { |