Hi,

I have some c code that I have put into my qt5 program but I get a lot of old-style-cast warnings which I would like to get rid of but don't quite know how to. I have tried reinterpret_cast but either I'm doing it incorrectly or it is not the right thing to do as it still results in the same error...

Thanks in advance!

Qt Code: 
  1. warning: use of old-style cast [-Wold-style-cast]                      
  2. warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
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Example code:
Qt Code: 
  1. unsigned int j,k;
  2.   unsigned int* jj;
  3.   char* cptr;
  4.   char buff[50];
  5.  
  6.       jj = (unsigned int*)&tmpY;  //recast as int as expected in htonl
  7.       j = htonl(*jj);      //convert to network format
  8.       cptr = (char*)&j;    //recast as a char * so can use indexing
  9.       sprintf(buff,"Y=%7.2f ",tmpY);
  10.       tmp=buff;
  11.       s.append(buff);
  12.       for(i=0;i<YLen;i++)
  13.       {
  14.         msg[YIndex+i] = cptr[i];
  15.       }
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