diff --git a/cfg/gtk.cfg b/cfg/gtk.cfg
index d86fec08e..a65b2e698 100644
--- a/cfg/gtk.cfg
+++ b/cfg/gtk.cfg
@@ -9,6 +9,13 @@
   <define name="G_CALLBACK(cb)" value="cb"/>
   <define name="G_LIKELY(expr)" value="(expr)"/>
   <define name="G_UNLIKELY(expr)" value="(expr)"/>
+  <!-- https://developer.gnome.org/glib/stable/glib-Type-Conversion-Macros.html -->
+  <define name="GINT_TO_POINTER(i)" value="((gpointer) (glong) (i))"/>
+  <define name="GPOINTER_TO_INT(p)" value="((gint)  (glong) (p))"/>
+  <define name="GUINT_TO_POINTER(u)" value="((gpointer) (gulong) (u))"/>
+  <define name="GPOINTER_TO_UINT(p)" value="((guint) (gulong) (p))"/>
+  <define name="GSIZE_TO_POINTER(s)" value="((gpointer) (gsize) (s))"/>
+  <define name="GPOINTER_TO_SIZE(p)" value="((gsize) (p))"/>
   <!-- https://developer.gnome.org/glib/stable/glib-I18N.html -->
   <!-- Using something similar to the gi18n-lib.h macro value here to avoid dependencies to gettext() -->
   <define name="_(string)" value="((char *) g_dgettext(NULL, string))"/>
diff --git a/test/cfg/gtk.c b/test/cfg/gtk.c
index c15e54011..ff63af205 100644
--- a/test/cfg/gtk.c
+++ b/test/cfg/gtk.c
@@ -32,6 +32,10 @@ void validCode(int argInt)
         // cppcheck-suppress checkLibraryNoReturn
         g_assert_not_reached();
     }
+    gpointer p = GINT_TO_POINTER(1);
+    int i = GPOINTER_TO_INT(p);
+    // cppcheck-suppress knownConditionTrueFalse
+    if (i == 1) {}
 }
 
 void g_malloc_test()