?
Solved

JNI Problem - GetStringChars giving core dump after few repititve operation

Posted on 2001-06-21
4
Medium Priority
?
742 Views
Last Modified: 2012-06-21
jstring str;
char *value;

value = (char *) (*env)->GetStringUTFChars( env,str,NULL);
(*env)->ReleaseStringUTFChars(env,str,value);

Above piece of code gets executed for each field of an Java object. It gives a core dump after executing successfully for some field at one specefic point.

Re-arranging the position of the field also gives the error after certain number of execution.

I don't do anything with the value as well, just retrieve it and then release it. It still gives an error.


Any pointer?????????????
0
Comment
Question by:jatinps
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 92

Expert Comment

by:objects
ID: 6216556
Simply assigning finalValue to value just gives you two pointers to the SAME block of memory. Then in the next line you release this block of memory so finalValue is no longer pointing to a valid block of memory.
0
 
LVL 92

Accepted Solution

by:
objects earned 1200 total points
ID: 6216558
You need to either delay releasing the block until you no longer need it, or take a copy of the block.
0
 
LVL 5

Expert Comment

by:vemul
ID: 7621054
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
- points to objects
Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

vemul
Cleanup Volunteer
0
 

Expert Comment

by:modulo
ID: 7643130
Finalized as proposed

modulo

Community Support Moderator
Experts Exchange
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
Suggested Courses
Course of the Month10 days, 23 hours left to enroll

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question