From b802a67562cc912213ebfc6ef8a380c775c999fe Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 24 Mar 2022 19:55:12 -0700
Subject: [PATCH] std.MultiArrayList: check size of element, not pointer

Ever since a semi-recent language specification update, pointers to
zero-sized types still have runtime bits.
---
 lib/std/multi_array_list.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/std/multi_array_list.zig b/lib/std/multi_array_list.zig
index 2af723d3a5..ae81b6c5e5 100644
--- a/lib/std/multi_array_list.zig
+++ b/lib/std/multi_array_list.zig
@@ -42,7 +42,10 @@ pub fn MultiArrayList(comptime S: type) type {
                     return &[_]F{};
                 }
                 const byte_ptr = self.ptrs[@enumToInt(field)];
-                const casted_ptr: [*]F = if (@sizeOf([*]F) == 0) undefined else @ptrCast([*]F, @alignCast(@alignOf(F), byte_ptr));
+                const casted_ptr: [*]F = if (@sizeOf(F) == 0)
+                    undefined
+                else
+                    @ptrCast([*]F, @alignCast(@alignOf(F), byte_ptr));
                 return casted_ptr[0..self.len];
             }