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From: jln@leland.Stanford.EDU (Jared Nedzel)
Newsgroups: comp.lang.lisp
Subject: Lucid Lisp/ Foreign Function Interface/ Malloc question?
Summary: Can I create a linked list in a C object file?
Message-ID: <1991Apr30.191914.21681@leland.Stanford.EDU>
Date: 30 Apr 91 19:19:14 GMT
Distribution: usa
Organization: AIR, Stanford University
Lines: 20

Help!  I'm writing a network communication utility that is written in
C but is called by Lucid Lisp 4.0 (on a Sun Sparcstation SLC) through
the foreign function interface.  The C routines use a linked list
to buffer messages before they are sent to the Lisp routines.  However,
when I try to create a new structure in the C code using malloc,
the Lisp bombs with the message:

	>>Trap: Interrupt: segmentation violation

Any idea what is going on here?  Is dynamic memory allocation in
a routine called by the foreign function interface verboten?

Please send e-mail.  I'll repost if there is enough interest.

Thanks,


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Jared L. Nedzel  nedzel@cive.stanford.edu   jln@portia.stanford.edu