use if statement

rust-lang · May 31, 2024 · f0956a5 · f0956a5
1 parent f4dafd9
commit f0956a5
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/compiler/rustc_mir_transform/src/known_panics_lint.rs b/compiler/rustc_mir_transform/src/known_panics_lint.rs
@@ -103,8 +103,11 @@ impl<'tcx> Value<'tcx> {
                 (PlaceElem::Index(idx), Value::Aggregate { fields, .. }) => {
                     let idx = prop.get_const(idx.into())?.immediate()?;
                     let idx = prop.ecx.read_target_usize(idx).ok()?.try_into().ok()?;
-                    let idx = (idx <= FieldIdx::MAX_AS_U32).then(|| FieldIdx::from_u32(idx))?;
-                    fields.get(idx).unwrap_or(&Value::Uninit)
+                    if idx <= FieldIdx::MAX_AS_U32 {
+                        fields.get(FieldIdx::from_u32(idx)).unwrap_or(&Value::Uninit)
+                    } else {
+                        return None;
+                    }
                 }
                 (
                     PlaceElem::ConstantIndex { offset, min_length: _, from_end: false },