src/share/classes/jdk/internal/org/objectweb/asm/tree/analysis/Frame.java

*** 752,767 ****
       *
       * @return a string representation of this frame.
       */
      @Override
      public String toString() {
!         StringBuffer b = new StringBuffer();
          for (int i = 0; i < getLocals(); ++i) {
!             b.append(getLocal(i));
          }
!         b.append(' ');
          for (int i = 0; i < getStackSize(); ++i) {
!             b.append(getStack(i).toString());
          }
!         return b.toString();
      }
  }
--- 752,767 ----
       *
       * @return a string representation of this frame.
       */
      @Override
      public String toString() {
!         StringBuilder sb = new StringBuilder();
          for (int i = 0; i < getLocals(); ++i) {
!             sb.append(getLocal(i));
          }
!         sb.append(' ');
          for (int i = 0; i < getStackSize(); ++i) {
!             sb.append(getStack(i).toString());
          }
!         return sb.toString();
      }
  }