On 24.06.2020 12:24, Ken Brown via Cygwin wrote:
On 6/24/2020 1:30 AM, Marco Atzeri via Cygwin wrote:
On 23.06.2020 23:02, Marco Atzeri wrote:
On 23.06.2020 22:56, Ken Brown via Cygwin wrote:
I think I've found the problem, although it will take patching and
rebuilding ImageMagick (which I haven't done) to confirm that I'm
right.
In the ImageMagick source file coders/ps.c:237, there's a call to
ghost_info->new_instance, a.k.a. gsapi_new_instance (see line 214).
The documentation of the latter in the ghostscript sources
(psi/iapi.c:57) says that the first argument pinstance should
satisfy *pinstance == NULL in the first call to that function.
But *pinstance in this call is the variable 'interpreter', defined
without initialization in ps.c:191. As a result, **pinstance
contains garbage, and the program eventually crashes when it tries
to dereference a garbage pointer.
The fix, if I'm right, is to initialize interpreter to NULL in
ps.c:191.
Ken
Noted.
Regards
MArco
a test ImageMagick-6.9.10.11-3 is going up.
Let me know if it solves the problem
That fixes it for my .eps file. I didn't think of it before, but a
similar patch to coders/pdf.c:201 will be needed for .pdf files. I
won't be able to test that because I haven't found a .pdf file that
exhibits the problem.
Ken
test version 6.9.10.11-4 is going up.
If Emily tests with her pdf files, it will be nice
Regards
Marco
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