pass: improve unknown label error message

portalgun-io · Mar 18, 2019 · 7a0eb66 · 7a0eb66
1 parent 87539d3
commit 7a0eb66
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pass/cfg.go b/pass/cfg.go
@@ -58,7 +58,7 @@ func CFG(fn *ir.Function) error {
 			}
 			target, found := fn.LabelTarget[*lbl]
 			if !found {
-				return errors.New("unknown label")
+				return fmt.Errorf("unknown label %q", *lbl)
 			}
 			cur.Succ = append(cur.Succ, target)
 		}