needsUnsafe := false
	f.walk(arg, ctxExpr, func(f *File, arg interface{}, context astContext) {
		px, ok := arg.(*ast.Expr)
		if !ok {
			return
		}
		sel, ok := (*px).(*ast.SelectorExpr)
		if ok {
			if l, ok := sel.X.(*ast.Ident); !ok || l.Name != "C" {
				return
			}

			for _, r := range f.Ref {
				if r.Expr == px {
					*px = p.rewriteName(f, r, addPosition)

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hvlaraeb--nx???7k-antouvacchb--nx?8&k-rekie-erv--nx?l-ladrua-rs--nx?m-darehsdrk--nx??a!.sg??bct-eimeuvejsemn--nx?d&do?iisevvad?lov?narts?uas??f&1-&l--nx?s--nx??2-h--nx??g&10aq0-ineve--nx?av?ev?lot?r&ajn&evvad?u??ájn&evvad?u????h?iz-lf--nx?j&ddadab?sel??k&el?hoj&sarak?šárák??iiv&ag&na&el?g??ŋ&ael?ág???ran???l&f?lahrevo?o&ms?s??sennev?t-&ilm--nx?tom--nx??u&-edr--nx?s??øms??muar?n&0-tsr--nx?2-dob--nx?5-&asir--nx?tals--nx??a&r!-i-om?f?t??t??douvsatvid?kiv?m&os?øs??n&od?ød??ra?sen?t&aouvatheig?ouv&a&...