I just tried to compile package openafs-1.4.0-3 with a non standard version
of the GNU C compiler.

It said

1.

./../rxkad/rxkad_common.c:190: warning: array subscript out of range
./../rxkad/rxkad_common.c:191: warning: array subscript out of range

The source code is

		rxkad_stats->spares[8] += thr_stats->spares[8];
		rxkad_stats->spares[9] += thr_stats->spares[9];

but in file src/des/stats.h

    long spares[8];