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

Regards
Marco
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