From f93a36c091a151ed02602d2f330f7206eb9f95a3 Mon Sep 17 00:00:00 2001
From: Veikka Tuominen <git@vexu.eu>
Date: Mon, 29 Jan 2024 09:46:12 +0200
Subject: llvm: revert bad array access optimization

Closes #18723
---
 test/behavior/basic.zig | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'test/behavior/basic.zig')

diff --git a/test/behavior/basic.zig b/test/behavior/basic.zig
index dc04a5b45c..42792f4aca 100644
--- a/test/behavior/basic.zig
+++ b/test/behavior/basic.zig
@@ -1400,3 +1400,16 @@ test "allocation and looping over 3-byte integer" {
     try expect(x[0] == 0x00);
     try expect(x[1] == 0x00);
 }
+
+test "loading array from struct is not optimized away" {
+    const S = struct {
+        arr: [1]u32 = .{0},
+        fn doTheTest(self: *@This()) !void {
+            const o = self.arr;
+            self.arr[0] = 1;
+            try expect(o[0] == 0);
+        }
+    };
+    var s = S{};
+    try s.doTheTest();
+}
-- 
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