var syscall.envOnce

6 uses

	syscall (current package)
		env_unix.go#L18: 	envOnce sync.Once
		env_unix.go#L56: 	envOnce.Do(copyenv)
		env_unix.go#L70: 	envOnce.Do(copyenv)
		env_unix.go#L92: 	envOnce.Do(copyenv)
		env_unix.go#L127: 	envOnce.Do(copyenv) // prevent copyenv in Getenv/Setenv
		env_unix.go#L140: 	envOnce.Do(copyenv)

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