References: syscall.PTRACE_O

const syscall.PTRACE_O_TRACEEXIT

one use

	syscall (current package)
		zerrors_linux_amd64.go#L747: 	PTRACE_O_TRACEEXIT               = 0x40

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)