make -C /builds/linux/tools/testing/selftests/../../../tools/arch/arm64/tools/ OUTPUT=/builds/linux/tools/testing/selftests/../../../tools/
make[4]: Entering directory '/builds/linux/tools/testing/selftests/ublk'
In file included from null.c:3:
null.c: In function 'ublk_null_tgt_init':
null.c:33:24: error: extra brace group at end of initializer
   33 |                 .seg = {
      |                        ^
null.c:33:24: note: (near initialization for '(anonymous)')