From c887df6ab48c15fc6fad817bb6c86778fbb59d70 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 20 Jan 2019 14:55:36 +0530
Subject: [PATCH] GLFW upstream commit to allow waiting on events without a
 window

https://github.com/glfw/glfw/commit/55b1a16f9061520724fc507a9ef243f641d1ee02
---
 glfw/glfw3.h  | 12 ------------
 glfw/window.c |  6 ------
 2 files changed, 18 deletions(-)

diff --git a/glfw/glfw3.h b/glfw/glfw3.h
index 182068b71..fd4a9144f 100644
--- a/glfw/glfw3.h
+++ b/glfw/glfw3.h
@@ -3739,10 +3739,6 @@ GLFWAPI void glfwPollEvents(void);
  *  GLFW will pass those events on to the application callbacks before
  *  returning.
  *
- *  If no windows exist, this function returns immediately.  For synchronization
- *  of threads in applications that do not create windows, use your threading
- *  library of choice.
- *
  *  Event processing is not required for joystick input to work.
  *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
@@ -3790,10 +3786,6 @@ GLFWAPI void glfwWaitEvents(void);
  *  GLFW will pass those events on to the application callbacks before
  *  returning.
  *
- *  If no windows exist, this function returns immediately.  For synchronization
- *  of threads in applications that do not create windows, use your threading
- *  library of choice.
- *
  *  Event processing is not required for joystick input to work.
  *
  *  @param[in] timeout The maximum amount of time, in seconds, to wait.
@@ -3817,10 +3809,6 @@ GLFWAPI void glfwWaitEventsTimeout(double timeout);
  *  This function posts an empty event from the current thread to the event
  *  queue, causing @ref glfwWaitEvents or @ref glfwWaitEventsTimeout to return.
  *
- *  If no windows exist, this function returns immediately.  For synchronization
- *  of threads in applications that do not create windows, use your threading
- *  library of choice.
- *
  *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
  *  GLFW_PLATFORM_ERROR.
  *
diff --git a/glfw/window.c b/glfw/window.c
index dcdbef7d0..c5ab04afb 100644
--- a/glfw/window.c
+++ b/glfw/window.c
@@ -1126,9 +1126,6 @@ GLFWAPI void glfwWaitEvents(void)
 {
     _GLFW_REQUIRE_INIT();
 
-    if (!_glfw.windowListHead)
-        return;
-
     _glfwPlatformWaitEvents();
 }
 
@@ -1152,8 +1149,5 @@ GLFWAPI void glfwPostEmptyEvent(void)
 {
     _GLFW_REQUIRE_INIT();
 
-    if (!_glfw.windowListHead)
-        return;
-
     _glfwPlatformPostEmptyEvent();
 }