425055 - If I register a custom nsIDNSService implementation via nsIComponentRegistrar, then jvm crashes when trying to resolve a url.

Status: RESOLVED WONTFIX

(Core Graveyard :: Java to XPCOM Bridge, defect)

Description

[Artem]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.12) Gecko/20080207 Ubuntu/7.10 (gutsy) Firefox/2.0.0.12
Build Identifier: 

If I register a custom nsIDNSService implementation via nsIComponentRegistrar, then jvm crashes when trying to resolve a url.  The crash is caused by NS_ASSERTION in GetJNIEnv() function in nsJavaXPCOMBindingUtils.cpp, since the a thread that is trying to perform dns resolution is not registered with JVM.

The fix is to register that thread with JVM:

 if (rc == JNI_EDETACHED) {
    rc = gCachedJVM->AttachCurrentThread((void**)&env, nsnull);
 }

Reproducible: Always

Steps to Reproduce:
1. Create a DNSServiceImpl class that implements nsIDNSService interface.
2. Create a DNSFactoryImpl class that implements nsIFactory interface and returns DNServiceImpl in createInstance method.
3. Register DSNFactorImpl instance with nsIComponentRegistrar
4. Obtain instance of nsIWebNavigation from webBroser
5. Call nsIWebNavigation.loadURI to load the content.

Comment 1

[Mike Hommey [:glandium]]

JavaXPCOM was removed in bug 648593.