tools/tiff2pdf.c:1893: error: Null Dereference
  pointer `sbc` last assigned on line 1881 could be null and is dereferenced at line 1893, column 33.

tools/tiff2pdf.c:1879:1: start of procedure t2p_read_tiff_size()
1877. */
1878. 
1879. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
      ^
1880. 
1881. 	uint64* sbc=NULL;

tools/tiff2pdf.c:1881:2: 
1879. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
1880. 
1881. 	uint64* sbc=NULL;
       ^
1882. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1883. 	unsigned char* jpt=NULL;

tools/tiff2pdf.c:1883:2: 
1881. 	uint64* sbc=NULL;
1882. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1883. 	unsigned char* jpt=NULL;
       ^
1884. 	tstrip_t i=0;
1885. 	tstrip_t stripcount=0;

tools/tiff2pdf.c:1884:2: 
1882. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1883. 	unsigned char* jpt=NULL;
1884. 	tstrip_t i=0;
       ^
1885. 	tstrip_t stripcount=0;
1886. #endif

tools/tiff2pdf.c:1885:2: 
1883. 	unsigned char* jpt=NULL;
1884. 	tstrip_t i=0;
1885. 	tstrip_t stripcount=0;
       ^
1886. #endif
1887.         uint64 k = 0;

tools/tiff2pdf.c:1887:9: 
1885. 	tstrip_t stripcount=0;
1886. #endif
1887.         uint64 k = 0;
              ^
1888. 
1889. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){

tools/tiff2pdf.c:1889:5: Taking true branch
1887.         uint64 k = 0;
1888. 
1889. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
          ^
1890. #ifdef CCITT_SUPPORT
1891. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){

tools/tiff2pdf.c:1891:6: Taking true branch
1889. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
1890. #ifdef CCITT_SUPPORT
1891. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
           ^
1892. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1893. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1892:4: 
1890. #ifdef CCITT_SUPPORT
1891. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
1892. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
         ^
1893. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
1894. 			return;

libtiff/tif_dir.c:1151:1: start of procedure TIFFGetField()
  1149.  * internal directory structure.
  1150.  */
  1151. int
        ^
  1152. TIFFGetField(TIFF* tif, uint32 tag, ...)
  1153. {

libtiff/tif_dir.c:1157:2: 
  1155. 	va_list ap;
  1156. 
  1157. 	va_start(ap, tag);
         ^
  1158. 	status = TIFFVGetField(tif, tag, ap);
  1159. 	va_end(ap);

libtiff/tif_dir.c:1158:2: Skipping TIFFVGetField(): empty list of specs
  1156. 
  1157. 	va_start(ap, tag);
  1158. 	status = TIFFVGetField(tif, tag, ap);
         ^
  1159. 	va_end(ap);
  1160. 	return (status);

libtiff/tif_dir.c:1159:2: 
  1157. 	va_start(ap, tag);
  1158. 	status = TIFFVGetField(tif, tag, ap);
  1159. 	va_end(ap);
         ^
  1160. 	return (status);
  1161. }

libtiff/tif_dir.c:1160:2: 
  1158. 	status = TIFFVGetField(tif, tag, ap);
  1159. 	va_end(ap);
  1160. 	return (status);
         ^
  1161. }
  1162. 

libtiff/tif_dir.c:1161:1: return from a call to TIFFGetField
  1159. 	va_end(ap);
  1160. 	return (status);
  1161. }
        ^
  1162. 
  1163. /*

tools/tiff2pdf.c:1893:4: 
1891. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
1892. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1893. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
         ^
1894. 			return;
1895. 		}
