Remove 1 -Wswitch-default warning in attr.c

diff --git a/lib/cgraph/attr.c b/lib/cgraph/attr.c
index 3c723dda338fd998dba0ba04ff1ae3c2e0a09a79..a223ac1cd67a0f8acbc2e8728cefa22d5453ea06 100644 (file)
--- a/lib/cgraph/attr.c
+++ b/lib/cgraph/attr.c
@@ -296,6 +296,9 @@ static Agsym_t *setattr(Agraph_t * g, int kind, char *name, char *value)
                    for (e = agfstout(root, n); e; e = agnxtout(root, e))
                        addattr(g, (Agobj_t *) e, rsym);
                break;
+           default:
+               assert(!"unreachable");
+               break;
            }
            rv = rsym;
        }