In file included from /home/bapt/dev/src/sys/modules/ufs/../../ufs/ufs/ufs_dirhash.c:58:0:                             
@/ufs/ufs/dir.h:114:33: error: variably modified 'dh_firstfree' at file scope [-Werror]                                
    ((namlen)+1)*sizeof(((struct direct *)0)->d_name[0]) + 3) & ~3)                                                    
                                 ^                                                                                     
@/ufs/ufs/dirhash.h:51:21: note: in expansion of macro 'DIRECTSIZ'                                                     
 #define DH_NFSTATS (DIRECTSIZ(MAXNAMLEN + 1) / DIRALIGN)                                                              
                     ^                                                                                                 
@/ufs/ufs/dirhash.h:99:19: note: in expansion of macro 'DH_NFSTATS'                                                    
  int dh_firstfree[DH_NFSTATS + 1]; /* first blk with N words free */                                                  
                   ^