From c50f286c78a4a9704ac3f9fecd7c351e7da89e02 Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Wed, 27 May 2026 17:49:09 -0700
Subject: [PATCH] fmt: add this guard to help the transition to nio

---
 fmt.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fmt.zig b/fmt.zig
index cda3c3d21f3450b9d03e7aacf2ece06b294ccbb1..09490170335b998486c6f6d4291015be03fbf653 100644
--- a/fmt.zig
+++ b/fmt.zig
@@ -424,6 +424,9 @@ fn formatType(value: anytype, comptime fmt: []const u8, options: FormatOptions,
         return formatAddress(value, options, writer);
     }
 
+    if (comptime std.meta.hasMethod(T, "format")) {
+        @compileError("fix this: " ++ @typeName(T));
+    }
     if (std.meta.hasMethod(T, "nprint")) {
         return value.nprint(writer);
     }
-- 
2.54.0