diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 7bfdd32b89..d5e648046d 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+Thu Mar 24 08:09:12 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* stabs.texinfo (Global Variables): Talk about stabs in files
+	where variables are referenced, but not defined.
+
 Wed Mar 23 07:16:36 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
 	* stabs.texinfo: Move stuff on @ and # type descriptors from node
diff --git a/gdb/doc/stabs.texinfo b/gdb/doc/stabs.texinfo
index c75836e0ce..20e5035ce7 100644
--- a/gdb/doc/stabs.texinfo
+++ b/gdb/doc/stabs.texinfo
@@ -856,6 +856,11 @@ from the external symbol for the global variable.  In the example above,
 the @code{.global _g_foo} and @code{_g_foo:} lines tell the assembler to
 produce an external symbol.
 
+Some compilers, like GCC, output @code{N_GSYM} stabs only once, where
+the variable is defined.  Other compilers, like SunOS4 /bin/cc, output a
+@code{N_GSYM} stab for each compilation unit which references the
+variable.
+
 @node Register Variables
 @section Register Variables