From 754b4658188af7e55889186e601576e83bf9a022 Mon Sep 17 00:00:00 2001
From: Almar Klein <almar.klein@gmail.com>
Date: Thu, 16 Apr 2020 11:35:03 +0200
Subject: [PATCH] Warn when binding a buffer that is still mapped

---
 wgpu-core/src/device/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wgpu-core/src/device/mod.rs b/wgpu-core/src/device/mod.rs
index a485df6f99..ec324d8885 100644
--- a/wgpu-core/src/device/mod.rs
+++ b/wgpu-core/src/device/mod.rs
@@ -1466,6 +1466,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     }
                     if !buffer_guard[id].life_guard.use_at(submit_index) {
                         if let resource::BufferMapState::Active = buffer_guard[id].map_state {
+                            log::warn!("Dropped buffer has a pending mapping.");
                             unmap_buffer(&device.raw, &mut buffer_guard[id]);
                         }
                         device.temp_suspected.buffers.push(id);