patch 7.4.2358

Problem:    Compiler warnings with Solaris Studio when using GTK3.
Solution:   Define FUNC2GENERIC depending on the system. (Kazunobu Kuriyama)

src/gui.h

@@ -541,3 +541,29 @@ typedef enum
 # define CONVERT_FROM_UTF8(String) (String)
 # define CONVERT_FROM_UTF8_FREE(String) ((String) = (char_u *)NULL)
 #endif /* FEAT_GUI_GTK */
+
+#ifdef FEAT_GUI_GTK
+/*
+ * The second parameter of g_signal_handlers_disconnect_by_func() is supposed
+ * to be a function pointer which was passed to g_signal_connect_*() somewhere
+ * previously, and hence it must be of type GCallback, i.e., void (*)(void).
+ *
+ * Meanwhile, g_signal_handlers_disconnect_by_func() is a macro calling
+ * g_signal_handlers_disconnect_matched(), and the second parameter of the
+ * former is to be passed to the sixth parameter of the latter the type of
+ * which, however, is declared as void * in the function signature.
+ *
+ * While the ISO C Standard does not require that function pointers be
+ * interconvertible to void *, widely-used compilers such as gcc and clang
+ * do such conversion implicitly and automatically on some platforms without
+ * issuing any warning.
+ *
+ * For Solaris Studio, that is not the case.  An explicit type cast is needed
+ * to suppress warnings on that particular conversion.
+ */
+# if defined(__SUNPRO_C) && defined(USE_GTK3)
+#  define FUNC2GENERIC(func) (void *)(func)
+# else
+#  define FUNC2GENERIC(func) G_CALLBACK(func)
+# endif
+#endif /* FEAT_GUI_GTK */

src/gui_beval.c

@@ -508,7 +508,7 @@ removeEventHandler(BalloonEval *beval)
     /* LINTED: avoid warning: dubious operation on enum */
 # if GTK_CHECK_VERSION(3,0,0)
     g_signal_handlers_disconnect_by_func(G_OBJECT(beval->target),
-					 G_CALLBACK(target_event_cb),
+					 FUNC2GENERIC(target_event_cb),
 					 beval);
 # else
     gtk_signal_disconnect_by_func((GtkObject*)(beval->target),
@@ -522,7 +522,7 @@ removeEventHandler(BalloonEval *beval)
 	/* LINTED: avoid warning: dubious operation on enum */
 # if GTK_CHECK_VERSION(3,0,0)
 	g_signal_handlers_disconnect_by_func(G_OBJECT(gui.mainwin),
-					     G_CALLBACK(mainwin_event_cb),
+					     FUNC2GENERIC(mainwin_event_cb),
 					     beval);
 # else
 	gtk_signal_disconnect_by_func((GtkObject*)(gui.mainwin),

src/gui_gtk_f.c

@@ -505,10 +505,10 @@ gtk_form_unrealize(GtkWidget *widget)
 	{
 #if GTK_CHECK_VERSION(3,0,0)
 	    g_signal_handlers_disconnect_by_func(G_OBJECT(child->widget),
-		    G_CALLBACK(gtk_form_child_map),
+		    FUNC2GENERIC(gtk_form_child_map),
 		    child);
 	    g_signal_handlers_disconnect_by_func(G_OBJECT(child->widget),
-		    G_CALLBACK(gtk_form_child_unmap),
+		    FUNC2GENERIC(gtk_form_child_unmap),
 		    child);
 #else
 	    gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
@@ -793,9 +793,9 @@ gtk_form_remove(GtkContainer *container, GtkWidget *widget)
 	{
 #if GTK_CHECK_VERSION(3,0,0)
 	    g_signal_handlers_disconnect_by_func(G_OBJECT(child->widget),
-					  G_CALLBACK(&gtk_form_child_map), child);
+		    FUNC2GENERIC(&gtk_form_child_map), child);
 	    g_signal_handlers_disconnect_by_func(G_OBJECT(child->widget),
-					  G_CALLBACK(&gtk_form_child_unmap), child);
+		    FUNC2GENERIC(&gtk_form_child_unmap), child);
 #else
 	    gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
 		    GTK_SIGNAL_FUNC(&gtk_form_child_map), child);

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2358,
 /**/
     2357,
 /**/