From 913cef33610dbeb17485534f64864ca8af5d9b72 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Date: Wed, 29 May 2024 13:13:00 +0200
Subject: [PATCH] Enforce eframe errors are `Send` and `Sync` (#4574)

* Follow-up to https://github.com/emilk/egui/pull/4565
---
 crates/eframe/src/epi.rs | 2 +-
 crates/eframe/src/lib.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/eframe/src/epi.rs b/crates/eframe/src/epi.rs
index b1a432dd..ac6585c3 100644
--- a/crates/eframe/src/epi.rs
+++ b/crates/eframe/src/epi.rs
@@ -41,7 +41,7 @@ pub type EventLoopBuilderHook = Box<dyn FnOnce(&mut EventLoopBuilder<UserEvent>)
 #[cfg(any(feature = "glow", feature = "wgpu"))]
 pub type WindowBuilderHook = Box<dyn FnOnce(egui::ViewportBuilder) -> egui::ViewportBuilder>;
 
-type DynError = Box<dyn std::error::Error>;
+type DynError = Box<dyn std::error::Error + Send + Sync>;
 
 /// This is how your app is created.
 ///
diff --git a/crates/eframe/src/lib.rs b/crates/eframe/src/lib.rs
index 0fc1f26a..9f9f3a4c 100644
--- a/crates/eframe/src/lib.rs
+++ b/crates/eframe/src/lib.rs
@@ -334,7 +334,7 @@ pub fn run_simple_native(
 #[derive(Debug)]
 pub enum Error {
     /// Something went wrong in user code when creating the app.
-    AppCreation(Box<dyn std::error::Error>),
+    AppCreation(Box<dyn std::error::Error + Send + Sync>),
 
     /// An error from [`winit`].
     #[cfg(not(target_arch = "wasm32"))]