tools/tiff2pdf.c:1913: error: Null Dereference
  pointer `sbc` last assigned on line 1894 could be null and is dereferenced at line 1913, column 33.

tools/tiff2pdf.c:1892:1: start of procedure t2p_read_tiff_size()
1890. */
1891. 
1892. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
      ^
1893. 
1894. 	uint64* sbc=NULL;

tools/tiff2pdf.c:1894:2: 
1892. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
1893. 
1894. 	uint64* sbc=NULL;
       ^
1895. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1896. 	unsigned char* jpt=NULL;

tools/tiff2pdf.c:1896:2: 
1894. 	uint64* sbc=NULL;
1895. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1896. 	unsigned char* jpt=NULL;
       ^
1897. 	tstrip_t i=0;
1898. 	tstrip_t stripcount=0;

tools/tiff2pdf.c:1897:2: 
1895. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1896. 	unsigned char* jpt=NULL;
1897. 	tstrip_t i=0;
       ^
1898. 	tstrip_t stripcount=0;
1899. #endif

tools/tiff2pdf.c:1898:2: 
1896. 	unsigned char* jpt=NULL;
1897. 	tstrip_t i=0;
1898. 	tstrip_t stripcount=0;
       ^
1899. #endif
1900.         uint64 k = 0;

tools/tiff2pdf.c:1900:9: 
1898. 	tstrip_t stripcount=0;
1899. #endif
1900.         uint64 k = 0;
              ^
1901. 
1902. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){

tools/tiff2pdf.c:1902:5: Taking true branch
1900.         uint64 k = 0;
1901. 
1902. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
          ^
1903. #ifdef CCITT_SUPPORT
1904. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){

tools/tiff2pdf.c:1904:6: Taking false branch
1902. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
1903. #ifdef CCITT_SUPPORT
1904. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
           ^
1905. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1906. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1911:6: Taking true branch
1909. #endif
1910. #ifdef ZIP_SUPPORT
1911. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
           ^
1912. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1913. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1912:4: 
1910. #ifdef ZIP_SUPPORT
1911. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
1912. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
         ^
1913. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
1914. 			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:1913:4: 
1911. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
1912. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1913. 			t2p->tiff_datasize=(tmsize_t)sbc[0];
         ^
1914. 			return;
1915. 		}
