Fail build gtk.go with go1.3

[YouROK]

fails on build gtk.go:
go get github.com/mattn/go-gtk/gtk

github.com/mattn/go-gtk/gtk

src/github.com/mattn/go-gtk/gtk/gtk.go:58: cannot use p.Bin.Container.Widget.GWidget (type *C.struct__GtkWidget) as type *C.GtkWidget in argument to _Cfunc_toGWindow
src/github.com/mattn/go-gtk/gtk/gtk.go:59: cannot use p.Window.Bin.Container.Widget.GWidget (type *C.struct__GtkWidget) as type *C.GtkWidget in argument to _Cfunc_toGDialog
src/github.com/mattn/go-gtk/gtk/gtk.go:60: cannot use p.Dialog.Window.Bin.Container.Widget.GWidget (type *C.struct__GtkWidget) as type *C.GtkWidget in argument to _Cfunc_toGAboutDialog
...
src/github.com/mattn/go-gtk/gtk/gtk.go:69: too many errors

in .go files, cgo struct defines as "type *C.struct__GtkWidget" and in C headers .h functions get args as "type *C.GtkWidget"
ret types have same bugs

in older version go, all build ok
sorry for my english

[silvasur]

Really weird...

I pulled the latest version of go-gtk and tried to go install the gtk package and got similar errors:

$ cd ~/go/src/github.com/mattn/go-gtk/gtk
$ go install 
# github.com/mattn/go-gtk/gtk
./gtk.go:58: cannot use _Cfunc_toGWindow(p.Bin.Container.Widget.GWidget) (type *C.GtkWindow) as type *C.struct__GtkWindow in return argument
./gtk.go:1199: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_title
./gtk.go:1205: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_resizable
./gtk.go:1208: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_get_resizable
./gtk.go:1211: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_add_accel_group
./gtk.go:1219: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_modal
./gtk.go:1222: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_default_size
./gtk.go:1226: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_gravity
./gtk.go:1233: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_position
./gtk.go:1236: cannot use WINDOW(v) (type *C.struct__GtkWindow) as type *C.GtkWindow in argument to _Cfunc_gtk_window_set_transient_for
./gtk.go:1236: too many errors

Then I installed the package again with all dependencies (using go install ./... in the directory) and everything worked nicely.

Shouldn't the go tool do all this automatically? Weird!

[mattn]

I know this. It seems cgo broken.

[YouROK]

Thanks kch42, this is work.

[StefanCristian]

@kch42 if latest means 1.3 < 1.3.1, then this might be a similar issue: https://code.google.com/p/go/issues/detail?id=8463

[mattn]

In latest go on hg, it should be worked.