Added error check.

ago%!(EXTRA string=14 years) · 44035f5ef1
parent 8aa8b7c2e4
commit 44035f5ef1
1 changed files with 6 additions and 0 deletions
--- a/src/opengl.c
+++ b/src/opengl.c
@ -606,6 +606,12 @@ GLFWAPI void glfwCopyGLState(GLFWwindow hsrc, GLFWwindow hdst, unsigned long mas
    src = (_GLFWwindow*) hsrc;
    dst = (_GLFWwindow*) hdst;

+    if (_glfwLibrary.currentWindow == dst)
+    {
+        _glfwSetError(GLFW_INVALID_VALUE, "Cannot copy OpenGL state to a current context");
+        return;
+    }
+
    _glfwPlatformCopyGLState(src, dst, mask);
 }