/var/lib/pcp/testsuite/src/parsemetricspec.c is in pcp-testsuite 3.10.8build1.
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  | #include <stdio.h>
#include <pcp/pmapi.h>
int
main(int argc, char **argv)
{
    int			isarch;
    char		*msg;
    pmMetricSpec	*rslt;
    int			sts;
    int			i;
    if (argc != 4) {
	fprintf(stderr, "Usage: parsemetricspec spec isarch host\n");
	exit(1);
    }
    if (strcmp(argv[1], "NULL") == 0) argv[1] = NULL;
    isarch = atol(argv[2]);
    if (strcmp(argv[3], "NULL") == 0) argv[3] = NULL;
    printf("pmParseMetricSpec(\"%s\", %d, \"%s\", ...)\n",
	argv[1], isarch, argv[3]);
    
    sts = pmParseMetricSpec(argv[1], isarch, argv[3], &rslt, &msg);
    if (sts < 0) {
	if (sts == PM_ERR_GENERIC)
	    printf("pmParseMetricSpec Error:\n%s\n", msg);
	else
	    printf("error:    %s\n", pmErrStr(sts));
    }
    else {
	printf("isarch:   %d\n", rslt->isarch);
	printf("source:   \"%s\"\n", rslt->source);
	printf("metric:   \"%s\"\n", rslt->metric);
	for (i = 0; i < rslt->ninst; i++) {
	    printf("inst[%d]:  \"%s\"\n", i, rslt->inst[i]);
	}
    }
    exit(0);
}
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