src/share/vm/runtime/sharedRuntime.cpp

*** 2959,2973 ****
--- 2959,2976 ----
        for (; !ss.at_return_type(); ss.next()) {
          BasicType bt = ss.type();
          if (bt == T_VALUETYPE) {
  #ifdef ASSERT
            Thread* THREAD = Thread::current();
+           // Avoid class loading from compiler thread
+           if (THREAD->can_call_java()) {
              Handle class_loader(THREAD, method->method_holder()->class_loader());
              Handle protection_domain(THREAD, method->method_holder()->protection_domain());
              Klass* k = ss.as_klass(class_loader, protection_domain, SignatureStream::ReturnNull, THREAD);
              assert(k != NULL && !HAS_PENDING_EXCEPTION, "can't resolve klass");
              assert(k == SystemDictionary::___Value_klass(), "other values not supported");
+           }
  #endif
            bt = T_VALUETYPEPTR;
          }
          sig_bt[i++] = bt;  // Collect remaining bits of signature
          if (ss.type() == T_LONG || ss.type() == T_DOUBLE)