Search code examples
cpointersgccgcc-warning

gcc: error: request for member ‘rlen’ in something not a structure or union

I have a unsigned char pointer which contains a structure.Now I want to do the following

unsigned char *buffer ;

//code to fill the buffer with the relavent information.

int len = ntohs((record_t*)buffer->len);

where record_t structure contains a field called len.I am not able to do so and am getting the error.

error: request for member ‘len’ in something not a structure or union.

what am I doing wrong here?

Solution

  • If you're confident that you're doing the right thing (though this looks very hackish), you just have to get the operator precedence right:

    ntohs( ((record_t*)buffer)->len );