diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f572db776d5..4b43f23e116 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jun 18 12:37:36 1993  Jim Kingdon  (kingdon@lioth.cygnus.com)
+
+	* buildsym.h: Doc fix for processing_acc_compilation.
+
 Thu Jun 17 19:57:08 1993  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
 	* printcmd.c (print_formatted): Don't use tab in wrap_here arg.
diff --git a/gdb/buildsym.h b/gdb/buildsym.h
index f70231cd645..c788e1156a6 100644
--- a/gdb/buildsym.h
+++ b/gdb/buildsym.h
@@ -71,7 +71,11 @@ EXTERN struct subfile *current_subfile;
 
 EXTERN unsigned char processing_gcc_compilation;
 
-/* When set, we are processing a .o file compiled by sun acc */
+/* When set, we are processing a .o file compiled by sun acc.  This is
+   misnamed; it refers to all stabs-in-elf implementations which use
+   N_UNDF the way Sun does, including Solaris gcc.  Hopefully all
+   stabs-in-elf implementations ever invented will choose to be
+   compatible.  */
 
 EXTERN unsigned char processing_acc_compilation;