re PR c/12713 (Document interaction of attribute noreturn and longjmp)

	PR c/12713
	* doc/extend.texi: Document interaction of attribute noreturn and
	longjmp.

From-SVN: r88070

gcc/ChangeLog

+2004-09-24  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+	PR c/12713
+	* doc/extend.texi: Document interaction of attribute noreturn and
+	longjmp.
+
 2004-09-24  Richard Henderson  <rth@redhat.com>
 
 	PR rtl-opt/17503

gcc/doc/extend.texi

@@ -2015,7 +2015,7 @@ uninitialized variables.
 
 The @code{noreturn} keyword does not affect the exceptional path when that
 applies: a @code{noreturn}-marked function may still return to the caller
-by throwing an exception.
+by throwing an exception or calling @code{longjmp}.
 
 Do not assume that registers saved by the calling function are
 restored before calling the @code{noreturn} function.