tcldot obj2cmd: squash a spurious -Wswitch-default compiler warning

diff --git a/tclpkg/tcldot/tcldot-util.c b/tclpkg/tcldot/tcldot-util.c
index da8e34250a77c4368bdd71dfb3e09e910883e19f..503d3372aeeee250f19663e1e566909b57cf299f 100644 (file)
--- a/tclpkg/tcldot/tcldot-util.c
+++ b/tclpkg/tcldot/tcldot-util.c
@@ -11,6 +11,7 @@
 
 #include "tcldot.h"
 #include <cgraph/strcasecmp.h>
+#include <cgraph/unreachable.h>
 
 size_t Tcldot_string_writer(GVJ_t *job, const char *s, size_t len)
 {
@@ -58,6 +59,7 @@ char *obj2cmd (void *obj) {
         case AGNODE:    snprintf(buf, sizeof(buf), "node%p",  obj); break;
         case AGINEDGE: 
         case AGOUTEDGE: snprintf(buf, sizeof(buf), "edge%p",  obj); break;
+        default:        UNREACHABLE();
     }
     return buf;
 }