--- /dev/null
+Index: cdecl-2.5/cdecl.c
+===================================================================
+--- cdecl-2.5.orig/cdecl.c
++++ cdecl-2.5/cdecl.c
+@@ -204,6 +204,7 @@ int DebugFlag = 0; /* -d, output debugg
+ #define ANSI 4 /* combo not allowed anymore in ANSI compiler */
+ #define A ANSI
+
++extern char **completion_matches PARAMS((char *, rl_compentry_func_t *));
+ /* This is an lower left triangular array. If we needed */
+ /* to save 9 bytes, the "long" row can be removed. */
+ char crosscheck[9][9] = {
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