Backported Skip's update to revision 1.34

diff --git a/Doc/ref/ref4.tex b/Doc/ref/ref4.tex
index 76b1fd37a0b8889ff43b4d51eb6f4181baa165bb..896920e253f63f86f14a0102020f1d54be8415f2 100644 (file)
--- a/Doc/ref/ref4.tex
+++ b/Doc/ref/ref4.tex
@@ -211,5 +211,12 @@ selected exception handler as additional information.  For class
 exceptions, this object must be an instance of the exception class
 being raised.
 
+\begin{notice}[warning]
+Messages to exceptions are not part of the Python API.  Their contents may
+change from one version of Python to the next without warning and should not
+be relied on by code which will run under multiple versions of the
+interpreter.
+\end{notice}
+
 See also the description of the \keyword{try} statement in section
 \ref{try} and \keyword{raise} statement in section \ref{raise}.