src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.printer/src/org/graalvm/compiler/printer/GraphPrinter.java

*** 192,210 ****
          return s;
      }
  
      static String constantToString(Object value) {
          Class<?> c = value.getClass();
          if (c.isArray()) {
              return constantArrayToString(value);
          } else if (value instanceof Enum) {
              return ((Enum<?>) value).name();
          } else if (isToStringTrusted(c)) {
              return value.toString();
          }
!         return MetaUtil.getSimpleName(c, true) + "@" + Integer.toHexString(System.identityHashCode(value));
! 
      }
  
      static String constantArrayToString(Object array) {
          Class<?> componentType = array.getClass().getComponentType();
          assert componentType != null;
--- 192,221 ----
          return s;
      }
  
      static String constantToString(Object value) {
          Class<?> c = value.getClass();
+         String suffix = "";
          if (c.isArray()) {
              return constantArrayToString(value);
          } else if (value instanceof Enum) {
              return ((Enum<?>) value).name();
          } else if (isToStringTrusted(c)) {
+             try {
                  return value.toString();
+             } catch (Throwable t) {
+                 suffix = "[toString error: " + t.getClass().getName() + "]";
+                 if (isToStringTrusted(t.getClass())) {
+                     try {
+                         suffix = "[toString error: " + t + "]";
+                     } catch (Throwable t2) {
+                         // No point in going further
                      }
!                 }
!             }
!         }
!         return MetaUtil.getSimpleName(c, true) + "@" + Integer.toHexString(System.identityHashCode(value)) + suffix;
      }
  
      static String constantArrayToString(Object array) {
          Class<?> componentType = array.getClass().getComponentType();
          assert componentType != null;