Hi Naoto,

On 7/12/2016 10:02 AM, Naoto Sato wrote:
Hello,

Please review the proposed fix to the following issues:

https://bugs.openjdk.java.net/browse/JDK-8170465
https://bugs.openjdk.java.net/browse/JDK-8170466

The proposed fix is located at:

http://cr.openjdk.java.net/~naoto/8170465.8170466/webrev.00/

These two JNI calls (NewStringUTF() and JNU_CallMethodByName()) in
src/java.base/share/native/libjava/jni_util.c can throw an exception.
Those possible exceptions need to be properly checked.

JNU_CHECK_EXCEPTION will do a return from the method in which it is placed, so you need to be careful to ensure you do all needed cleanup before that eg:

 203                 JNU_CHECK_EXCEPTION(env);
 204                 free(str1);

needs to be reversed else we won't free str1. Similarly:

 210                     JNU_CHECK_EXCEPTION(env);
 211                     (*env)->DeleteLocalRef(env, s2);

needs to be reversed so we don't leak the local ref. (It is safe to call DeleteLocalRef with an exception pending.)

Thanks,
David

Naoto

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