tools/tiffcp.c:1046: error: Integer Overflow L2
  ([0, `imagewidth`] - 1):unsigned32.

tools/tiffcp.c:1025:1: <LHS trace>
1023.  * Separate -> contig by row.
1024.  */
1025. DECLAREcpFunc(cpSeparate2ContigByRow)
      ^
1026. {
1027. 	tdata_t inbuf = _TIFFmalloc(TIFFScanlineSize(in));

tools/tiffcp.c:1025:1: Parameter `imagewidth`
1023.  * Separate -> contig by row.
1024.  */
1025. DECLAREcpFunc(cpSeparate2ContigByRow)
      ^
1026. {
1027. 	tdata_t inbuf = _TIFFmalloc(TIFFScanlineSize(in));

tools/tiffcp.c:1046:9: Assignment
1044. 			inp = (uint8*)inbuf;
1045. 			outp = ((uint8*)outbuf) + s;
1046. 			for (n = imagewidth; n-- > 0;) {
              ^
1047. 				*outp = *inp++;
1048. 				outp += spp;

tools/tiffcp.c:1046:25: Binary operation: ([0, imagewidth] - 1):unsigned32
1044. 			inp = (uint8*)inbuf;
1045. 			outp = ((uint8*)outbuf) + s;
1046. 			for (n = imagewidth; n-- > 0;) {
                              ^
1047. 				*outp = *inp++;
1048. 				outp += spp;
