-O2 -fPIC -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes -fPIC  -O2  -MD -MT pri_facility.o -MF .pri_facility.o.d -MP -c -o pri_facility.o pri_facility.c
q921.c: In function ‘q921_receive’:
q921.c:1501:20: error: array subscript 0 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1501 |         if (h->data[0] != 0x0f) {
      |             ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1510:20: error: array subscript 3 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1510 |         if (h->data[3] != Q921_TEI_IDENTITY_CHECK_RESPONSE
      |             ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1511:29: error: array subscript 4 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1511 |                 && !(h->data[4] & 0x01)) {
      |                      ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1528:22: error: array subscript 1 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1528 |         ri = (h->data[1] << 8) | h->data[2];
      |               ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1528:41: error: array subscript 2 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1528 |         ri = (h->data[1] << 8) | h->data[2];
      |                                  ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1529:23: error: array subscript 4 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1529 |         tei = (h->data[4] >> 1);
      |                ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1531:24: error: array subscript 3 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1531 |         switch (h->data[3]) {
      |                 ~~~~~~~^~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
q921.c:1606:26: error: array subscript 4 is outside the bounds of an interior zero-length array ‘u_int8_t[0]’ {aka ‘unsigned char[]’} [-Werror=zero-length-bounds]
 1606 |                 action = &h->data[4];
      |                          ^~~~~~~~~~~
In file included from pri_internal.h:35,
                 from q921.c:38:
pri_q921.h:136:18: note: while referencing ‘data’
  136 |         u_int8_t data[0];               /* Any further data */
      |                  ^~~~
cc1: all warnings being treated as errors
make: *** [Makefile:190: q921.o] Error 1
make: *** Waiting for unfinished jobs....
q931.c: In function ‘q931_receive’:
q931.c:7688:46: error: array subscript 17 is outside the bounds of an interior zero-length array ‘unsigned char[0]’ [-Werror=zero-length-bounds]
 7688 |                         h->raw[h->crlen + 2] -= 0x8;
      |                                              ^~
In file included from pri_internal.h:36,
                 from q931.c:32:
pri_q931.h:40:23: note: while referencing ‘raw’
   40 |         unsigned char raw[0];
      |                       ^~~
q931.c:7688:46: error: array subscript 17 is outside the bounds of an interior zero-length array ‘unsigned char[0]’ [-Werror=zero-length-bounds]
 7688 |                         h->raw[h->crlen + 2] -= 0x8;
      |                         ~~~~~~~~~~~~~~~~~~~~~^~~~~~
In file included from pri_internal.h:36,
                 from q931.c:32:
pri_q931.h:40:23: note: while referencing ‘raw’
   40 |         unsigned char raw[0];
      |                       ^~~
cc1: all warnings being treated as errors
make: *** [Makefile:190: q931.o] Error 1