Commit 6473dc22fc1659df218ade897647c0658e0ebec9 | zig

author	Nils Koch <mail@nilskch.dev> 2025-12-17 17:54:31+01:00
committer	Andrew Kelley <andrew@ziglang.org> 2026-02-09 19:59:09+01:00
log	6473dc22fc1659df218ade897647c0658e0ebec9
tree	8f0960e64eda1d637b4ff19c328d2a530a3d1921
parent	f1b255402377b41e47cec65b4dbc2633e1dd7b83

1 files changed, 10 insertions(+), 2 deletions(-)

lib/std/array_list.zig+10-2

 @@ -1362,11 +1362,11 @@ pub fn Aligned(comptime T: type, comptime alignment: ?mem.Alignment) type {
             return self.getLast();
         }
-        const init_capacity: comptime_int = @max(1, std.atomic.cache_line / @sizeOf(T));
         /// Called when memory growth is necessary. Returns a capacity larger than
         /// minimum that grows super-linearly.
         pub fn growCapacity(minimum: usize) usize {
+            if (@sizeOf(T) == 0) return math.maxInt(usize);
+            const init_capacity: comptime_int = @max(1, std.atomic.cache_line / @sizeOf(T));
             return minimum +| (minimum / 2 + init_capacity);
         }
     };
 @@ -1751,6 +1751,14 @@ test "insert" {
         try testing.expect(list.items[2] == 2);
         try testing.expect(list.items[3] == 3);
     }
+    {
+        var list: ArrayList(struct {}) = .empty;
+        defer list.deinit(a);
+        try list.insert(a, 0, .{});
+        try list.append(a, .{});
+        try testing.expect(list.items.len == 2);
+    }
 }
 test "insertSlice" {