tools/tiff2pdf.c:1810: error: Null Dereference
  pointer `sbc` last assigned on line 1774 could be null and is dereferenced at line 1810, column 10.

tools/tiff2pdf.c:1772:1: start of procedure t2p_read_tiff_size()
1770. */
1771. 
1772. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
      ^
1773. 
1774. 	uint64* sbc=NULL;

tools/tiff2pdf.c:1774:2: 
1772. void t2p_read_tiff_size(T2P* t2p, TIFF* input){
1773. 
1774. 	uint64* sbc=NULL;
       ^
1775. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1776. 	unsigned char* jpt=NULL;

tools/tiff2pdf.c:1776:2: 
1774. 	uint64* sbc=NULL;
1775. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1776. 	unsigned char* jpt=NULL;
       ^
1777. 	tstrip_t i=0;
1778. 	tstrip_t stripcount=0;

tools/tiff2pdf.c:1777:2: 
1775. #if defined(JPEG_SUPPORT) || defined (OJPEG_SUPPORT)
1776. 	unsigned char* jpt=NULL;
1777. 	tstrip_t i=0;
       ^
1778. 	tstrip_t stripcount=0;
1779. #endif

tools/tiff2pdf.c:1778:2: 
1776. 	unsigned char* jpt=NULL;
1777. 	tstrip_t i=0;
1778. 	tstrip_t stripcount=0;
       ^
1779. #endif
1780. #ifdef OJPEG_SUPPORT

tools/tiff2pdf.c:1781:9: 
1779. #endif
1780. #ifdef OJPEG_SUPPORT
1781.         tsize_t k = 0;
              ^
1782. #endif
1783. 

tools/tiff2pdf.c:1784:5: Taking true branch
1782. #endif
1783. 
1784. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
          ^
1785. #ifdef CCITT_SUPPORT
1786. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){

tools/tiff2pdf.c:1786:6: Taking false branch
1784. 	if(t2p->pdf_transcode == T2P_TRANSCODE_RAW){
1785. #ifdef CCITT_SUPPORT
1786. 		if(t2p->pdf_compression == T2P_COMPRESS_G4 ){
           ^
1787. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1788. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1793:6: Taking false branch
1791. #endif
1792. #ifdef ZIP_SUPPORT
1793. 		if(t2p->pdf_compression == T2P_COMPRESS_ZIP){
           ^
1794. 			TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc);
1795. 			t2p->tiff_datasize=(tmsize_t)sbc[0];

tools/tiff2pdf.c:1800:6: Taking true branch
1798. #endif
1799. #ifdef OJPEG_SUPPORT
1800. 		if(t2p->tiff_compression == COMPRESSION_OJPEG){
           ^
1801. 			if(!TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc)){
1802. 				TIFFError(TIFF2PDF_MODULE, 

tools/tiff2pdf.c:1801:8: 
1799. #ifdef OJPEG_SUPPORT
1800. 		if(t2p->tiff_compression == COMPRESSION_OJPEG){
1801. 			if(!TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc)){
             ^
1802. 				TIFFError(TIFF2PDF_MODULE, 
1803. 					"Input file %s missing field: TIFFTAG_STRIPBYTECOUNTS",

libtiff/tif_dir.c:1100:1: start of procedure TIFFGetField()
  1098.  * internal directory structure.
  1099.  */
  1100. int
        ^
  1101. TIFFGetField(TIFF* tif, uint32 tag, ...)
  1102. {

libtiff/tif_dir.c:1106:2: 
  1104. 	va_list ap;
  1105. 
  1106. 	va_start(ap, tag);
         ^
  1107. 	status = TIFFVGetField(tif, tag, ap);
  1108. 	va_end(ap);

libtiff/tif_dir.c:1107:2: Skipping TIFFVGetField(): empty list of specs
  1105. 
  1106. 	va_start(ap, tag);
  1107. 	status = TIFFVGetField(tif, tag, ap);
         ^
  1108. 	va_end(ap);
  1109. 	return (status);

libtiff/tif_dir.c:1108:2: 
  1106. 	va_start(ap, tag);
  1107. 	status = TIFFVGetField(tif, tag, ap);
  1108. 	va_end(ap);
         ^
  1109. 	return (status);
  1110. }

libtiff/tif_dir.c:1109:2: 
  1107. 	status = TIFFVGetField(tif, tag, ap);
  1108. 	va_end(ap);
  1109. 	return (status);
         ^
  1110. }
  1111. 

libtiff/tif_dir.c:1110:1: return from a call to TIFFGetField
  1108. 	va_end(ap);
  1109. 	return (status);
  1110. }
        ^
  1111. 
  1112. /*

tools/tiff2pdf.c:1801:8: Taking false branch
1799. #ifdef OJPEG_SUPPORT
1800. 		if(t2p->tiff_compression == COMPRESSION_OJPEG){
1801. 			if(!TIFFGetField(input, TIFFTAG_STRIPBYTECOUNTS, &sbc)){
             ^
1802. 				TIFFError(TIFF2PDF_MODULE, 
1803. 					"Input file %s missing field: TIFFTAG_STRIPBYTECOUNTS",

tools/tiff2pdf.c:1808:4: 
1806. 				return;
1807. 			}
1808. 			stripcount=TIFFNumberOfStrips(input);
         ^
1809. 			for(i=0;i<stripcount;i++){
1810. 				k += sbc[i];

libtiff/tif_strip.c:60:1: start of procedure TIFFNumberOfStrips()
  58.  * Compute how many strips are in an image.
  59.  */
  60. uint32
      ^
  61. TIFFNumberOfStrips(TIFF* tif)
  62. {

libtiff/tif_strip.c:63:2: 
  61. TIFFNumberOfStrips(TIFF* tif)
  62. {
  63. 	TIFFDirectory *td = &tif->tif_dir;
       ^
  64. 	uint32 nstrips;
  65. 

libtiff/tif_strip.c:66:13: Condition is false
  64. 	uint32 nstrips;
  65. 
  66. 	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
                  ^
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)

libtiff/tif_strip.c:67:7: Condition is true
  65. 
  66. 	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
            ^
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
  69. 		nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,

libtiff/tif_strip.c:66:13: 
  64. 	uint32 nstrips;
  65. 
  66. 	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
                  ^
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)

libtiff/tif_strip.c:66:2: 
  64. 	uint32 nstrips;
  65. 
  66. 	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
       ^
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)

libtiff/tif_strip.c:68:6: Taking true branch
  66. 	nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
           ^
  69. 		nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
  70. 		    "TIFFNumberOfStrips");

libtiff/tif_strip.c:69:3: 
  67. 	     TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
  68. 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
  69. 		nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
        ^
  70. 		    "TIFFNumberOfStrips");
  71. 	return (nstrips);

libtiff/tif_aux.c:36:1: start of procedure _TIFFMultiply32()
    34. #include <math.h>
    35. 
    36. uint32
        ^
    37. _TIFFMultiply32(TIFF* tif, uint32 first, uint32 second, const char* where)
    38. {

libtiff/tif_aux.c:39:2: 
    37. _TIFFMultiply32(TIFF* tif, uint32 first, uint32 second, const char* where)
    38. {
    39. 	uint32 bytes = first * second;
         ^
    40. 
    41. 	if (second && bytes / second != first) {

libtiff/tif_aux.c:41:6: Taking true branch
    39. 	uint32 bytes = first * second;
    40. 
    41. 	if (second && bytes / second != first) {
             ^
    42. 		TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
    43. 		bytes = 0;

libtiff/tif_aux.c:41:16: Taking false branch
    39. 	uint32 bytes = first * second;
    40. 
    41. 	if (second && bytes / second != first) {
                       ^
    42. 		TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
    43. 		bytes = 0;

libtiff/tif_aux.c:46:2: 
    44. 	}
    45. 
    46. 	return bytes;
         ^
    47. }
    48. 

libtiff/tif_aux.c:47:1: return from a call to _TIFFMultiply32
    45. 
    46. 	return bytes;
    47. }
        ^
    48. 
    49. uint64

libtiff/tif_strip.c:71:2: 
  69. 		nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
  70. 		    "TIFFNumberOfStrips");
  71. 	return (nstrips);
       ^
  72. }
  73. 

libtiff/tif_strip.c:72:1: return from a call to TIFFNumberOfStrips
  70. 		    "TIFFNumberOfStrips");
  71. 	return (nstrips);
  72. }
      ^
  73. 
  74. /*

tools/tiff2pdf.c:1809:8: 
1807. 			}
1808. 			stripcount=TIFFNumberOfStrips(input);
1809. 			for(i=0;i<stripcount;i++){
             ^
1810. 				k += sbc[i];
1811. 			}

tools/tiff2pdf.c:1809:12: Loop condition is true. Entering loop body
1807. 			}
1808. 			stripcount=TIFFNumberOfStrips(input);
1809. 			for(i=0;i<stripcount;i++){
                 ^
1810. 				k += sbc[i];
1811. 			}

tools/tiff2pdf.c:1810:5: 
1808. 			stripcount=TIFFNumberOfStrips(input);
1809. 			for(i=0;i<stripcount;i++){
1810. 				k += sbc[i];
          ^
1811. 			}
1812. 			if(TIFFGetField(input, TIFFTAG_JPEGIFOFFSET, &(t2p->tiff_dataoffset))){
