From 1e4d3e26613e28f32085ba5932acfc3e91efa4ea Mon Sep 17 00:00:00 2001
From: Keegan McAllister <kmcallister@mozilla.com>
Date: Thu, 17 Oct 2013 18:06:00 -0700
Subject: [PATCH] Print GLFW errors

---
 src/components/main/platform/common/glfw_windowing.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/components/main/platform/common/glfw_windowing.rs b/src/components/main/platform/common/glfw_windowing.rs
index 0a7f255665c..60eaa421c6c 100644
--- a/src/components/main/platform/common/glfw_windowing.rs
+++ b/src/components/main/platform/common/glfw_windowing.rs
@@ -27,6 +27,11 @@ pub struct Application;
 
 impl ApplicationMethods for Application {
     fn new() -> Application {
+        // Per GLFW docs it's safe to set the error callback before calling
+        // glfwInit(), and this way we notice errors from init too.
+        do glfw::set_error_callback |_error_code, description| {
+            error!("GLFW error: %s", description);
+        };
         glfw::init();
         Application
     }