From 7cdbfc26a969b157be40bdb3d0aecf3341e3cf18 Mon Sep 17 00:00:00 2001
From: Malte Ubl <malte@vercel.com>
Date: Sun, 11 Oct 2026 12:49:26 -0700
Subject: [PATCH] Format local-array-reads and record the preflight baseline
 for corpus 4671

---
 .../compiler/src/backend/llvm/local-array-reads.ts  | 13 +++++++++++--
 .../compiler/test/ts7/baselines/order-parity.json   |  6 ++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/packages/compiler/src/backend/llvm/local-array-reads.ts b/packages/compiler/src/backend/llvm/local-array-reads.ts
index f4059b104..abe88c9d1 100644
--- a/packages/compiler/src/backend/llvm/local-array-reads.ts
+++ b/packages/compiler/src/backend/llvm/local-array-reads.ts
@@ -115,10 +115,19 @@ function inlineArrayRead(
       nullable?.(value.type.unionId) !== true
     )
       return null;
-    return { type: value.type, element, presentTag, missingTag, array, index, nullableElement: true };
+    return {
+      type: value.type,
+      element,
+      presentTag,
+      missingTag,
+      array,
+      index,
+      nullableElement: true,
+    };
   }
   const element = array.type.elem;
-  if ((!isRefCounted(element) && !isScalarElement(element)) || element.kind === "union") return null;
+  if ((!isRefCounted(element) && !isScalarElement(element)) || element.kind === "union")
+    return null;
   const presentTag = arms.findIndex((arm) => typeEquals(arm, element));
   if (presentTag < 0 || then.kind !== "unionWrap" || then.tag !== presentTag) return null;
   return { type: value.type, element, presentTag, missingTag, array, index };
diff --git a/packages/compiler/test/ts7/baselines/order-parity.json b/packages/compiler/test/ts7/baselines/order-parity.json
index 537f6dea7..987062767 100644
--- a/packages/compiler/test/ts7/baselines/order-parity.json
+++ b/packages/compiler/test/ts7/baselines/order-parity.json
@@ -15859,6 +15859,12 @@
     "<repo>/tests/corpus/constant-module-globals/main.ts"
    ],
    "diags": []
+  },
+  "<repo>/tests/corpus/4671-scoped-array-read-borrows.ts": {
+   "order": [
+    "<repo>/tests/corpus/4671-scoped-array-read-borrows.ts"
+   ],
+   "diags": []
   }
  }
 }