/usr/include/ncarg/hlu/VarArg.h is in libncarg-dev 6.3.0-13.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | /*
 *      $Id: VarArg.h,v 1.5 1994-12-16 20:04:56 boote Exp $
 */
/************************************************************************
*									*
*			     Copyright (C)  1992			*
*	     University Corporation for Atmospheric Research		*
*			     All Rights Reserved			*
*									*
************************************************************************/
/*
 *	File:		VarArg.h
 *
 *	Author:		Jeff W. Boote
 *			National Center for Atmospheric Research
 *			PO 3000, Boulder, Colorado
 *
 *	Date:		Thu Sep 3 17:14:31 MDT 1992
 *
 *	Description:	This file contains all the macro defs and prototypes
 *			to support varargs for the hlu library.
 */
#ifndef	_VARARG_H_
#define	_VARARG_H_
#include <ncarg/hlu/hluP.h>
#if	NhlNeedProto
#include <stdarg.h>
#define VA_START(ap,last)       va_start(ap,last) 
#else
#include <varargs.h>
#define VA_START(ap,last)       va_start(ap) 
#endif
extern int _NhlVarToSetArgList(
#if	NhlNeedProto
	va_list		ap,		/* vararg list			*/ 
	_NhlArgList	args		/* pointer to return arglist in	*/ 
#endif
);
#endif	/* _VARARG_H_ */
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