Fix for #618267. Adding a method to determine if multiplication has

third_party/libtiff/tiffio.h

 /* $Id: tiffio.h,v 1.91 2012-07-29 15:45:29 tgl Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
  *
  * Permission to use, copy, modify, distribute, and sell this software and
  * its documentation for any purpose is hereby granted without fee, provided
  * that (i) the above copyright notices and this permission notice appear in
  * all copies of the software and related documentation, and (ii) the names of
@@ skipping 280 matching lines @@
 /*
  * Auxiliary functions.
  */
 
 extern void* _TIFFmalloc(tmsize_t s);
 extern void* _TIFFrealloc(void* p, tmsize_t s);
 extern void _TIFFmemset(void* p, int v, tmsize_t c);
 extern void _TIFFmemcpy(void* d, const void* s, tmsize_t c);
 extern int _TIFFmemcmp(const void* p1, const void* p2, tmsize_t c);
 extern void _TIFFfree(void* p);
+extern int _TIFFIfMultiplicationOverflow(tmsize_t op1, tmsize_t op2);
 
 /*
 ** Stuff, related to tag handling and creating custom tags.
 */
 extern int TIFFGetTagListCount( TIFF * );
 extern uint32 TIFFGetTagListEntry( TIFF *, int tag_index );
     
 #define TIFF_ANY       TIFF_NOTYPE     /* for field descriptor searching */
 #define TIFF_VARIABLE  -1              /* marker for variable length tags */
 #define TIFF_SPP       -2              /* marker for SamplesPerPixel tags */
@@ skipping 237 matching lines @@
 #endif /* _TIFFIO_ */
 
 /* vim: set ts=8 sts=8 sw=8 noet: */
 /*
  * Local Variables:
  * mode: c
  * c-basic-offset: 8
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  * End:
  */