c - Problems with arrays of unspecified lengths -

i'm writing irda stack in c , implementing information access service component , need lookup table class/key/value pairs. keep in orderly format, i'm trying put 1 initialiser. following code works fine , compiles data compact linked tables in rom.

#define ias_ptype_string 0x00 #define ias_ptype_byte   0x01  typedef struct {     ubyte* name;     ubyte  type;     ubyte* value; } ias_attrib_t ;  typedef ias_attrib_t* ias_attrib_list_t[];  typedef struct {     ubyte* name;     ias_attrib_list_t* attributes; } ias_class_t;  static const ias_class_t ias_database[] = {     {"irda:ircomm",         &(ias_attrib_list_t){             &(ias_attrib_t){"parameters", ias_ptype_string, "irda:tinytp:lsapsel"},             null,         },     }, }; 

however i'm having trouble getting data out. according types used, should able this:

ubyte class = 1; ubyte attr = 1; ubyte* name = (*(ias_database[class].attributes))[attr]->name; 

this because

• ias_database[class].attributes type ias_attrib_list_t*
• *(ias_database[class].attributes) type ias_attrib_list_t i.e. ias_attrib_t*[]
• (*(ias_database[class].attributes))[attr] should type ias_attrib_t*
• (*(ias_database[class].attributes))[attr]->name should type ubyte*

however when try query table, invalid use of array unspecified bounds mspgcc. hack (ias_attrib_t*)((ias_database[class].attributes)+(sizeof(ias_attrib_t)*attr)) fails until cast db void (ias_attrib_t*)((void*)(ias_database[class].attributes)+(sizeof(ias_attrib_t)*attr)) feels dirty. i'd figure out correct syntax right way.

never mind. in utter frustration seems tried every variant bar 1 put here. (*(ias_database[class].attributes))[attr] indeed work , works when expressed (*ias_database[class].attributes)[attr] believe compiler incorrectly assuming first pointer (being ubyte**) list , trying apply index pointer type (where type incomplete).