Compile problem using gcc version 10.3.1

[wwortel]

bridge.c: In function ‘ph_control’:
bridge.c:159:2: error: array subscript 2 is outside array bounds of ‘unsigned char[16]’ [-Werror=array-bounds]
159 | *d++ = c2;
| ^~~~
bridge.c:150:16: note: while referencing ‘data’
150 | unsigned char data[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];