From f8ae048d60cd4ecd8f597688a05c2f6c2348341d Mon Sep 17 00:00:00 2001
From: Luflosi <luflosi@luflosi.de>
Date: Thu, 13 Feb 2020 22:25:46 +0100
Subject: [PATCH] X11: Fix setting the clipboard string to itself

From upstream: https://github.com/glfw/glfw/commit/0c27ed1d0ef36672f0ef28d86bf8e108cc6e379d.
---
 glfw/x11_window.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/glfw/x11_window.c b/glfw/x11_window.c
index 8a3a12b5e..0a007d841 100644
--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -2735,8 +2735,9 @@ void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor UNUSED)
 
 void _glfwPlatformSetClipboardString(const char* string)
 {
+    char* copy = _glfw_strdup(string);
     free(_glfw.x11.clipboardString);
-    _glfw.x11.clipboardString = _glfw_strdup(string);
+    _glfw.x11.clipboardString = copy;
 
     XSetSelectionOwner(_glfw.x11.display,
                        _glfw.x11.CLIPBOARD,