/var/lib/pcp/testsuite/src/unpickargs.c is in pcp-testsuite 4.0.1-1.
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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60  | /*
 * Exercise __pmProcessUnpickArgs() 
 *
 * Copyright (c) 2017 Ken McDonell.  All Rights Reserved.
 */
#include <pcp/pmapi.h>
#include "libpcp.h"
int
main(int argc, char **argv)
{
    int		c;
    int		sts;
    int		errflag = 0;
    __pmExecCtl_t	*argp = NULL;
    pmSetProgname(argv[0]);
    while ((c = getopt(argc, argv, "D:?")) != EOF) {
	switch (c) {
	case 'D':	/* debug options */
	    sts = pmSetDebug(optarg);
	    if (sts < 0) {
		fprintf(stderr, "%s: unrecognized debug options specification (%s)\n",
		    pmGetProgname(), optarg);
		errflag++;
	    }
	    break;
	case '?':
	default:
	    errflag++;
	    break;
	}
    }
    if (errflag || optind != argc-1) {
	fprintf(stderr,
"Usage: %s [options]\n\
\n\
Options:\n\
  -D debug[,...] set PCP debugging option(s)\n",
                pmGetProgname());
        exit(1);
    }
    if ((sts = __pmProcessUnpickArgs(&argp, argv[optind])) < 0) {
	fprintf(stderr, "__pmProcessUnpickArgs: %s\n", pmErrStr(sts));
	exit(1);
    }
    if ((sts = __pmProcessExec(&argp, PM_EXEC_TOSS_STDIN, PM_EXEC_WAIT)) != 0) {
	fprintf(stderr, "__pmProcessExec: %d\n", sts);
	exit(1);
    }
    exit(0);
}
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