Variable length array in structure won't be supported - Rebuild of the Debian archive with clang

"Variable length array in structure won't be supported" build failure(s) — clang 3.8.1

int returnAnInt(void) {
  return 42;
}

int main() {
  struct {
     char buf[returnAnIt()];
  } r;
}

Package	Version	Supposed error message	Full log
bird	1.6.0-1	netlink.c:814:10: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log
libdc1394-22	2.2.4-1	control.c:286:19: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log
libqb	1.0-1	check_ipc.c:200:9: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log
ndisc6	1.0.1-6	trace-tcp.c:58:11: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log
rng-tools	2-unofficial-mt.14-1	rngd_linux.c:191:17: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log
unscd	0.52-1	nscd.c:2446:9: error: fields must have a constant size: 'variable length array in structure' extension will never be supported	Log

6 errors