if key == "GODEBUG" {
		p := new(string)
		*p = value
		godebugEnv.Store(p)
		godebugNotify(true)
	}
}

//go:linkname syscall_runtimeUnsetenv syscall.runtimeUnsetenv
func syscall_runtimeUnsetenv(key string) {
	unsetenv_c(key)
	if key == "GODEBUG" {
		godebugEnv.Store(nil)
		godebugNotify(true)
	}
}

// writeErrStr writes a string to descriptor 2.