From a48a083edb0d91a887b3d33e455a8c2a0f66d638 Mon Sep 17 00:00:00 2001
From: Fred Drake <fdrake@acm.org>
Date: Fri, 18 Jun 1999 19:17:28 +0000
Subject: Added paragraph about potential re-initialization of extension
 modules; responding to suggestion by Robin Boerdijk
 <Robin.Boerdijk@nl.origin-it.com>.

---
 Doc/ext/ext.tex | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Doc/ext/ext.tex b/Doc/ext/ext.tex
index d645af7..33d6492 100644
--- a/Doc/ext/ext.tex
+++ b/Doc/ext/ext.tex
@@ -406,6 +406,13 @@ that it creates (which is unused here).  It aborts with a fatal error
 if the module could not be initialized satisfactorily, so the caller
 doesn't need to check for errors.
 
+\strong{Note:}  Removing entries from \code{sys.modules} or importing
+compiled modules into multiple interpreters within a process (or
+following a \cfunction{fork()} without an intervening
+\cfunction{exec()}) can create problems for some extension modules.
+Extension module authors should exercise caution when initializing
+internal data structures.
+
 
 \section{Compilation and Linkage
          \label{compilation}}
-- 
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