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December 2001

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2001.12.09 22:17 "0xC0000005: Access Violation in TIFFReadRGBAImage()", by <keno@coretechnologies.com>

Hello all, I'm getting a 0xC0000005: Access Violation while in a call to the
function TIFFReadRGBAImage(). 

What I am trying to do is discover if a TIFF file is corrupt or not. If I
read the file successfully then it's ok, if not it's corrupt. I have the
following code:


 TIFF* tif = TIFFOpen((LPCSTR)tmpFile, "r"); 
 
 if (tif) { 
  uint32 w, h; 
  size_t npixels; 
  uint32* raster;
  
  TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &w); 
  TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &h); 
  npixels = w * h; 
  raster = (uint32*)  _TIFFmalloc(npixels * sizeof (uint32)); 
  
  if (raster != NULL) {
   if (TIFFReadRGBAImage(tif, w, h, raster, 0))    // ERROR OCCURS HERE
    result = true;
   _TIFFfree(raster); 
  } 
  TIFFClose(tif); 
 }

Im using the following:

Win 2k + SP2
Visual Studio 6 + Service Pack

----------------------------
Also when building the tiff library, I included /MDd in the makefile as I
have this switch present in the VC project I'm working with. I got the
following warnings while building:

tif_getimage.c
tif_getimage.c(1910) : warning C4550: expression evaluates to a function
which i
s missing an argument list
tif_getimage.c(1911) : warning C4550: expression evaluates to a function
which i
s missing an argument list
tif_getimage.c(1912) : warning C4550: expression evaluates to a function
which i
s missing an argument list
tif_getimage.c(1913) : warning C4550: expression evaluates to a function
which i
s missing an argument list
tif_getimage.c(1914) : warning C4550: expression evaluates to a function
which i
s missing an argument list
tif_getimage.c(1915) : warning C4550: expression evaluates to a function
which i
s missing an argument list


- Keno -