diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fa6c161976f..4e7ebb25c43 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+Sun May 31 00:27:47 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* extend.texi: Bring back reference to trampoline paper.
+
+Sun May 31 00:22:34 1998  Ulrich Drepper  <drepper@cygnus.com>
+
+	* Makefile.in (USER_H): Add stdbool.h.
+	* ginclude/stdbool.h: New file.
+
 Fri May 29 01:48:25 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* jump.c (thread_jumps): Do not look at the NOTE_LINE_NUMBER
diff --git a/gcc/extend.texi b/gcc/extend.texi
index a691162bf6b..a7c0766bd24 100644
--- a/gcc/extend.texi
+++ b/gcc/extend.texi
@@ -366,7 +366,8 @@ does not refer to anything that has gone out of scope, you should be
 safe.
 
 GNU CC implements taking the address of a nested function using a
-technique called @dfn{trampolines}.
+technique called @dfn{trampolines}.   A paper describing them is
+available as @samp{http://master.debian.org/~karlheg/Usenix88-lexic.pdf}.
 
 A nested function can jump to a label inherited from a containing
 function, provided the label was explicitly declared in the containing