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<message 
  url="2003/11/7c99500ef454714de5976058df1dee4b"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-11-08T09:59:01"
  subject="Re: [Caml-list] segfaults"
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<thread subject="[Caml-list] segfaults">
<msg 
  url="2003/11/91026f5c9a6c85960c1b03109f47fd47"
  from="Anastasia Gornostaeva &lt;ermine@e...&gt;"
  author="Anastasia Gornostaeva"
  date="2003-11-08T09:10:43"
  subject="[Caml-list] segfaults">
<msg 
  url="2003/11/7c99500ef454714de5976058df1dee4b"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-11-08T09:59:01"
  subject="Re: [Caml-list] segfaults">
</msg>
</msg>
</thread>

<contents>
On Sat, Nov 08, 2003 at 12:11:11PM +0300, Anastasia Gornostaeva wrote:
&gt; Hello.
&gt; 
&gt; My program often crashes. Why? I use Ocaml 3.06 and 3.07CVS under FreeBSD 4.9.
&gt; In my program I use many packets such as ocaml-expat, cryptokid, ocaml-mysql,
&gt; pcre-ocaml, ocurl, ocamlnet and so on.
&gt; My programs works several hours and goes to core. All cores are different.
&gt; It seems main problem is with GC.
&gt; How to be?

Well, quite easily. I was getting segfaults in one program I wrote
because in the C part I'd accidentally used 'return' instead of the
'CAMLreturn' macro.

The way to diagnose these sorts of problems is to add regular calls to
`Gc.full_major ()' into your program. If the program crashes while
making these calls, then you can be fairly sure it's a GC-related
memory allocation problem. Look at the stack trace - it should give
you some clues.

Rich.

-- 
Richard Jones. http://www.annexia.org/ http://freshmeat.net/users/rwmj
Merjis Ltd. http://www.merjis.com/ - improving website return on investment
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