lib: Fix variable-length array declarations in hci structures

Use of zero as the size for arrays as the last element of a structure
is a GNU C extension, which as of GCC 10 produces diagnostics when
values in the extended array are referenced.  Switch to the C99
standard idiom for flexible array members, already in use in a few
other headers.

Signed-off-by: Anuj Jain <anuj01.jain@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>

diff --git a/lib/hci.h b/lib/hci.h
index 3b2c25d..a6f6326 100755 (executable)
--- a/lib/hci.h
+++ b/lib/hci.h
@@ -729,7 +729,7 @@ typedef struct {
 typedef struct {
        uint8_t         flt_type;
        uint8_t         cond_type;
-       uint8_t         condition[0];
+       uint8_t         condition[];
 } __attribute__ ((packed)) set_event_flt_cp;
 #define SET_EVENT_FLT_CP_SIZE 2
 
@@ -2192,7 +2192,7 @@ typedef struct {
 #define EVT_LE_META_EVENT      0x3E
 typedef struct {
        uint8_t         subevent;
-       uint8_t         data[0];
+       uint8_t         data[];
 } __attribute__ ((packed)) evt_le_meta_event;
 #define EVT_LE_META_EVENT_SIZE 1
 
@@ -2216,7 +2216,7 @@ typedef struct {
        uint8_t         bdaddr_type;
        bdaddr_t        bdaddr;
        uint8_t         length;
-       uint8_t         data[0];
+       uint8_t         data[];
 } __attribute__ ((packed)) le_advertising_info;
 #define LE_ADVERTISING_INFO_SIZE 9
 
@@ -2303,7 +2303,7 @@ typedef struct {
 typedef struct {
        uint16_t                total_num_blocks;
        uint8_t                 num_handles;
-       cmplt_handle            handles[0];
+       cmplt_handle            handles[];
 }  __attribute__ ((packed)) evt_num_completed_blocks;
 
 #define EVT_AMP_STATUS_CHANGE                  0x4D
@@ -2321,7 +2321,7 @@ typedef struct {
 #define EVT_STACK_INTERNAL             0xFD
 typedef struct {
        uint16_t        type;
-       uint8_t         data[0];
+       uint8_t         data[];
 } __attribute__ ((packed)) evt_stack_internal;
 #define EVT_STACK_INTERNAL_SIZE 2
 
@@ -2464,19 +2464,19 @@ struct hci_dev_req {
 
 struct hci_dev_list_req {
        uint16_t dev_num;
-       struct hci_dev_req dev_req[0];  /* hci_dev_req structures */
+       struct hci_dev_req dev_req[];   /* hci_dev_req structures */
 };
 
 struct hci_conn_list_req {
        uint16_t dev_id;
        uint16_t conn_num;
-       struct hci_conn_info conn_info[0];
+       struct hci_conn_info conn_info[];
 };
 
 struct hci_conn_info_req {
        bdaddr_t bdaddr;
        uint8_t  type;
-       struct hci_conn_info conn_info[0];
+       struct hci_conn_info conn_info[];
 };
 
 struct hci_auth_info_req {