acyclic: squash a -Wswitch-default warning

diff --git a/cmd/tools/acyclic.c b/cmd/tools/acyclic.c
index 792630962b5d7d3a889da164342788f376123520..14a4a75152da60fe8078d36880455ca14755f83c 100644 (file)
--- a/cmd/tools/acyclic.c
+++ b/cmd/tools/acyclic.c
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <cgraph/cgraph.h>
 #include <cgraph/exit.h>
+#include <cgraph/unreachable.h>
 
 typedef struct {
     Agrec_t h;
@@ -157,6 +158,8 @@ static void init(int argc, char *argv[])
                    cmd, optopt);
            usage(-1);
            break;
+       default:
+           UNREACHABLE();
        }
     if (optind < argc) {
        inFile = openFile(argv[optind], "r");