Created attachment 1110 [details]
36592524V000.pdf

This one is particularly easy to fix -- a BBox of [0 0 0 0] was
given for a Form XObject.

We simply revert to unity scaling and issue an error message since
the PDF specification states:

BBox (Required) An array of four numbers in the form coordinate system
     (see above), giving the coordinates of the left, bottom, right, and
     top edges, respectively, of the form XObject’s bounding box. These
     boundaries are used to clip the form XObject and to determine its
     size for caching.

Incidentally, this bad PDF was produced by: >>>> Elcad/Aucoplan 7.0.0 <<<<

The patch is:

diff -c -r1.88 pdf_draw.ps
*** lib/pdf_draw.ps     18 Nov 2004 17:09:16 -0000      1.88
--- lib/pdf_draw.ps     17 Dec 2004 20:54:53 -0000
***************
*** 1262,1267 ****
--- 1262,1272 ----
        /BBox knownoget {
          exch pop      % discard y height
          aload pop pop exch pop sub    % BBox width
+         dup 0 eq {
+             (   **** Warning: /BBox has zero width which is not allowed.\n)
+             pdfformaterror
+             pop pop 1 1               % 0 width -- revert to unity scaling
+           } if
          div           % scale x widths
          dup 0 lt { neg } if           % get magnitude
        } {

*** Bug 687738 has been marked as a duplicate of this bug. ***