Unable to catch exception in native code

QED · #1 25-Jan-2006, 10:05

Hi all,

I hope this post is within scope for this forum.

I have a Java-based application that uses native C++ libraries (built with g++-4.0 on Debian GNU/Linux Testing) for specialized, computation-intensive routines.

Within the native code, I need to catch exceptions thrown inside called methods and throw a corresponding Java exception back to the JVM. This used to work just fine. But I am performing a rebuild after some time has past, and our platform itself has had some upgrades (to glibc, etc.). Consequently, the desired functionality seems to be broken. The exceptions are not being caught in the new build.

Note: the same code built and tested on MS Windows platforms using Visual C++ .NET 2003 works exactly as expected.

Here is a snippet some of the code that is failing:

CPP / C++ / C Code:

/*
 * Class: informeta_mentys_api_license_FileLicense
 * Method: nativeReadExpiry
 * Signature: ()J
 */
JNIEXPORT jlong JNICALL Java_informeta_mentys_api_license_FileLicense_nativeReadExpiry
(JNIEnv *env, jclass cls)
{
    jlong expiry(0);
    try
    {
        expiry = FileLicense::getInstance().readExpiry();
    }
    catch (LicenseException& e)
    {
        env->ThrowNew(Class_LicenseException, e.getMessage().c_str());
    }
    catch (JNIException&)
    {
        // Do nothing; exception already pending from failed JNI call
    }
    catch (...)
    {
        env->ThrowNew(Class_LicenseException, "unidentified runtime error");
    }
    return expiry;
}

Here is the error message that the system gives:

Code:

terminate called after throwing an instance of 'informeta::mentys::security::LicenseException'

Any input or advice would be terrific.

Matthew

QED · #2 25-Jan-2006, 14:12

Well, I have successfully rebuilt using version 3.4 GNU compiler. Hence, I must conclude for the moment that there is some peculiar bug in the latest gcc packages for Debian testing. Until an update is available that could potentially address such a bug, I'll consider this issue closed.

Thanks to all who may have read this post. If you are using JNI with g++-4.0, you may find this relevant.

Matthew

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Unable to catch exception in native code

Re: Unable to catch exception in native code