Fix for 687081, PDF file produces incomplete tiff, fails to run in display device

Alex Cherepanov <[email protected]>
Newsgroups gmane.comp.printing.ghostscript.patches
Organization Coscript Software
Message-ID <[email protected]>
Fix error recovery code for PDF image; pop the operand of image operator
restored by the standard PS error recovery.

The image object "34 0 obj" is incorrect.
It contains:
<< /BitsPerComponent 1  /Mask [ 130 130 ] ... >>
but the mask components must be < 2**BitsPerComponent
We can try to do something better than discarding the whole image.

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pdf_draw.ps.diff (text/plain, 576 B)
Index: gs/lib/pdf_draw.ps
===================================================================
RCS file: /cvs/ghostscript/gs/lib/pdf_draw.ps,v
retrieving revision 1.77
diff -b -u -r1.77 pdf_draw.ps
--- gs/lib/pdf_draw.ps	8 Oct 2003 11:43:02 -0000	1.77
+++ gs/lib/pdf_draw.ps	15 Oct 2003 20:48:34 -0000
@@ -939,6 +939,7 @@
    { ColorSpace setgcolorspace currentdict end setfillblend /image }
   ifelse
   .systemvar stopped {
+    pop
     $error /errorname get dup /ioerror eq {
       pop (\n   **** Warning: File has insufficient data for an image.\n)
       pdfformaterror
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