tools/tiff2pdf.c:1908: error: Null Dereference
  pointer `sbc` last assigned on line 1889 could be null and is dereferenced at line 1908, column 33.

tools/tiff2pdf.c:1887:1: start of procedure t2p_read_tiff_size()
1885. */
1886. 
1887. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
      ^
1888. 
1889. 	uint64* sbc=NULL;

tools/tiff2pdf.c:1889:2: 
1887. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
1888. 
1889. 	uint64* sbc=NULL;
       ^
1890. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1891. 	unsigned char* jpt=NULL;

tools/tiff2pdf.c:1891:2: 
1889. 	uint64* sbc=NULL;
1890. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1891. 	unsigned char* jpt=NULL;
       ^
1892. 	tstrip_t i=0;
1893. 	tstrip_t stripcount=0;

tools/tiff2pdf.c:1892:2: 
1890. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1891. 	unsigned char* jpt=NULL;
1892. 	tstrip_t i=0;
       ^
1893. 	tstrip_t stripcount=0;
1894. #endif

tools/tiff2pdf.c:1893:2: 
1891. 	unsigned char* jpt=NULL;
1892. 	tstrip_t i=0;
1893. 	tstrip_t stripcount=0;
       ^
1894. #endif
1895.         uint64 k = 0;

tools/tiff2pdf.c:1895:9: 
1893. 	tstrip_t stripcount=0;
1894. #endif
1895.         uint64 k = 0;
              ^
1896. 
1897. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){

tools/tiff2pdf.c:1897:5: Taking true branch
1895.         uint64 k = 0;
1896. 
1897. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
          ^
1898. #ifdef CCITT_SUPPORT
1899. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){

tools/tiff2pdf.c:1899:6: Taking false branch
1897. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
1898. #ifdef CCITT_SUPPORT
1899. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
           ^
1900. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1901. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1906:6: Taking true branch
1904. #endif
1905. #ifdef ZIP_SUPPORT
1906. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
           ^
1907. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1908. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1907:4: 
1905. #ifdef ZIP_SUPPORT
1906. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
1907. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
         ^
1908. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
1909. 			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:1908:4: 
1906. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
1907. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1908. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
         ^
1909. 			return;
1910. 		}
