diff -Nur original/gtk/window-decorator/gtk-window-decorator.c modified/gtk/window-decorator/gtk-window-decorator.c
--- original/gtk/window-decorator/gtk-window-decorator.c	2019-11-27 13:24:31.000000000 +0000
+++ modified/gtk/window-decorator/gtk-window-decorator.c	2020-05-17 00:28:11.586617947 +0100
@@ -122,7 +122,7 @@
 
 XRenderPictFormat *xformat_rgba;
 
-const gchar * window_type_frames[WINDOW_TYPE_FRAMES_NUM] = {
+const gchar * __attribute__((__common__))window_type_frames[WINDOW_TYPE_FRAMES_NUM] = {
     "normal", "modal_dialog", "dialog", "menu", "utility"
 };
 
diff -Nur original/gtk/window-decorator/gtk-window-decorator.h modified/gtk/window-decorator/gtk-window-decorator.h
--- original/gtk/window-decorator/gtk-window-decorator.h	2019-11-27 13:24:31.000000000 +0000
+++ modified/gtk/window-decorator/gtk-window-decorator.h	2020-05-17 00:27:21.383286282 +0100
@@ -272,7 +272,7 @@
 } default_frame_references_t;
 
 extern default_frame_references_t default_frames[WINDOW_TYPE_FRAMES_NUM * 2];
-const gchar * window_type_frames[WINDOW_TYPE_FRAMES_NUM];
+const gchar * __attribute__((__common__))window_type_frames[WINDOW_TYPE_FRAMES_NUM];
 
 extern char *program_name;