On Sun, 7 Apr 2024 15:57:26 +0200
Rob Schmersel <rob.schmersel@bahnhof.se> wrote:

> I tracked it down to the use of syscall in the tcell package file
> tscreen_bsd.go (line 46)
> 
> 
>  >       fd = uintptr(t.out.(*os.File).Fd())
>  >       if _, _, e1 := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioc,
>  >       tios, 0, 0, 0); e1 != 0 { e = e1
>  >               goto failed
>  >       }

Joel Sing patched our lang/go to allow SYS_IOCTL in Syscall, but not
in Syscall6.  I tried changing Syscall6 to Syscall in tscreen_bsd.go.
The "function not implemented" error stopped appearing, but

 - micro got stuck on a black screen; I needed to close the terminal.
 - I can't add my patch to the port, because "make update-patches"
   doesn't see it.  The file is outside WRKSRC, in
   WRKDIR/go/pkg/mod/github.com/zyedidia/tcell/v2@v2.0.10

--- tscreen_bsd.go.orig.port	Sun Apr  7 11:53:03 2024
+++ tscreen_bsd.go	Sun Apr  7 11:57:57 2024
@@ -43,7 +43,7 @@
 	tios = uintptr(unsafe.Pointer(t.tiosp))
 	ioc = uintptr(syscall.TIOCGETA)
 	fd = uintptr(t.out.(*os.File).Fd())
-	if _, _, e1 := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioc, tios, 0, 0, 0); e1 != 0 {
+	if _, _, e1 := syscall.Syscall(syscall.SYS_IOCTL, fd, ioc, tios); e1 != 0 {
 		e = e1
 		goto failed
 	}
@@ -61,7 +61,7 @@
 	tios = uintptr(unsafe.Pointer(&newtios))
 
 	ioc = uintptr(syscall.TIOCSETA)
-	if _, _, e1 := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioc, tios, 0, 0, 0); e1 != 0 {
+	if _, _, e1 := syscall.Syscall(syscall.SYS_IOCTL, fd, ioc, tios); e1 != 0 {
 		e = e1
 		goto failed
 	}
@@ -94,7 +94,7 @@
 		fd := uintptr(t.out.(*os.File).Fd())
 		ioc := uintptr(syscall.TIOCSETAF)
 		tios := uintptr(unsafe.Pointer(t.tiosp))
-		syscall.Syscall6(syscall.SYS_IOCTL, fd, ioc, tios, 0, 0, 0)
+		syscall.Syscall(syscall.SYS_IOCTL, fd, ioc, tios)
 		t.out.(*os.File).Close()
 	}
 	if t.in != nil {
@@ -108,8 +108,8 @@
 	dim := [4]uint16{}
 	dimp := uintptr(unsafe.Pointer(&dim))
 	ioc := uintptr(syscall.TIOCGWINSZ)
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL,
-		fd, ioc, dimp, 0, 0, 0); err != 0 {
+	if _, _, err := syscall.Syscall(syscall.SYS_IOCTL,
+		fd, ioc, dimp); err != 0 {
 		return -1, -1, err
 	}
 	return int(dim[1]), int(dim[0]), nil