src/hotspot/share/prims/jvm.cpp

rev 56281 : 8218628: Add detailed message to NullPointerException describing what is null.
Summary: This is the implementation of JEP 358: Helpful NullPointerExceptions.
Reviewed-by: coleenp
rev 56283 : [mq]: fixes_review_of_16.patch

*** 572,585 ****
    }
    if (method->is_native()) {
      return NULL;
    }
  
-   ResourceMark rm(THREAD);
    stringStream ss;
    bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
    if (ok) {
      char *result_string = ss.as_string();
      trim_well_known_class_names(result_string);
      oop result = java_lang_String::create_oop_from_str(result_string, CHECK_0);
      return (jstring) JNIHandles::make_local(env, result);
    } else {
--- 572,585 ----
    }
    if (method->is_native()) {
      return NULL;
    }
  
    stringStream ss;
    bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
    if (ok) {
+     ResourceMark rm(THREAD);
      char *result_string = ss.as_string();
      trim_well_known_class_names(result_string);
      oop result = java_lang_String::create_oop_from_str(result_string, CHECK_0);
      return (jstring) JNIHandles::make_local(env, result);
    } else {