const golang.org/x/sys/unix.TIOCSPGRP

2 uses

	golang.org/x/sys/unix (current package)
		zerrors_darwin_arm64.go#L1434: 	TIOCSPGRP                         = 0x80047476

	src.elv.sh/pkg/sys
		tc.go#L10: 	return unix.IoctlSetPointerInt(fd, unix.TIOCSPGRP, pid)

The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)