Auto merge of #53815 - F001:if-let-guard, r=petrochenkov

[rust.git] / src / libsyntax / visit.rs

diff --git a/src/libsyntax/visit.rs b/src/libsyntax/visit.rs
index e57d692faae53de63a428a61c17342beb98459d9..77311bf53fd1e84e5c0b1e5f9fc190993e0ed133 100644 (file)
--- a/src/libsyntax/visit.rs
+++ b/src/libsyntax/visit.rs
@@ -819,7 +819,11 @@ pub fn walk_expr<'a, V: Visitor<'a>>(visitor: &mut V, expression: &'a Expr) {
 
 pub fn walk_arm<'a, V: Visitor<'a>>(visitor: &mut V, arm: &'a Arm) {
     walk_list!(visitor, visit_pat, &arm.pats);
-    walk_list!(visitor, visit_expr, &arm.guard);
+    if let Some(ref g) = &arm.guard {
+        match g {
+            Guard::If(ref e) => visitor.visit_expr(e),
+        }
+    }
     visitor.visit_expr(&arm.body);
     walk_list!(visitor, visit_attribute, &arm.attrs);
 }