Added missing flags for size hints.

readme.html

@@ -349,6 +349,7 @@ version of GLFW.</p>
   <li>[X11] Bugfix: Some window properties required by the ICCCM were not set</li>
   <li>[X11] Bugfix: Calling <code>glXCreateContextAttribsARB</code> with an unavailable OpenGL version caused the application to terminate with a <code>BadMatch</code> Xlib error</li>
   <li>[X11] Bugfix: A synchronization point necessary for jitter-free locked cursor mode was incorrectly removed</li>
+  <li>[X11] Bugfix: The window size hints were not updated when calling <code>glfwSetWindowSize</code> on a non-resizable window</li>
   <li>[Win32] Changed port to use Unicode mode only</li>
   <li>[Win32] Removed explicit support for versions of Windows older than Windows XP</li>
   <li>[Win32] Bugfix: Window activation and iconification did not work as expected</li>

src/x11_window.c

@@ -956,7 +956,6 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
 void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
 {
     int mode = 0, rate, sizeChanged = GL_FALSE;
-    XSizeHints* sizehints;
 
     rate = window->refreshRate;
 
@@ -970,14 +969,14 @@ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
     {
         // Update window size restrictions to match new window size
 
-        sizehints = XAllocSizeHints();
-        sizehints->flags = 0;
+        XSizeHints* hints = XAllocSizeHints();
 
-        sizehints->min_width  = sizehints->max_width  = width;
-        sizehints->min_height = sizehints->max_height = height;
+        hints->flags |= (PMinSize | PMaxSize);
+        hints->min_width  = hints->max_width  = width;
+        hints->min_height = hints->max_height = height;
 
-        XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, sizehints);
-        XFree(sizehints);
+        XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, hints);
+        XFree(hints);
     }
 
     // Change window size before changing fullscreen mode?