The function JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) asserts the following for the memory pools:

  // In our current implementation, we make sure that all non-heap              
  // pools have defined init and max sizes. Heap pools do not matter,           
  // as we never use total_init and total_max for them.                         
  assert(heap || !has_undefined_init_size, "Undefined init size");              
  assert(heap || !has_undefined_max_size,  "Undefined max size");

This is no longer true when the perm gen was removed and the metaspace was added.

These asserts should be removed.