// because if we are sharing address space with the parent process,
	// then the parent process can not be running concurrently.
	inForkedChild = true

	clearSignalHandlers()

	// When we are the child we are the only thread running,
	// so we know that nothing else has changed gp.m.sigmask.
	msigrestore(getg().m.sigmask)

	inForkedChild = false
}