Unstable catching

[4ntoine]

I can't understand and this can probably be not coffeecatch issue, but it seems to be.

Sometimes crash is not catched and the process just die:

case 1 (catched):

03-06 18:49:47.562: ERROR/CLANG_WRAPPER(4862): going to test crash
03-06 18:49:47.562: WARN/crash_handler(4862): Caught a crash, signum=11
03-06 18:49:47.562: ERROR/webcore(4862): Report WebCore crash to the ErrorReportUtils at:Thu Mar 06 18:49:47 GMT+05:00 2014
03-06 18:49:47.562: ERROR/CLANG_WRAPPER(4862): catch()
03-06 18:49:47.562: ERROR/CLANG_WRAPPER(4862): ** FATAL ERROR in parseTranslationUnit(): signal 11 (Address not mapped to object) at address 0x0 [at libclang_wrapper.so:0x89d0 (Java_name_antonsmirnov_clang_clang_1wrapper_parseTranslationUnit+0x8c)]
03-06 18:49:47.582: INFO/ActivityManager(539): Process name.antonsmirnov.android.app (pid 4862) has died.
03-06 18:49:47.582: WARN/ActivityManager(539): Force removing ActivityRecord{43f2a538 name.antonsmirnov.android.app/.ui.MainActivity}: app died, no saved state

case 2 (died):

03-06 18:51:10.220: ERROR/CLANG_WRAPPER(5120): going to test crash
03-06 18:51:10.230: INFO/CloudTaskManager(1740): [backupApp] pkgName[com.infoshell.recradio]
03-06 18:51:10.230: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[com.physicaloid.app.writer] backup
03-06 18:51:10.230: INFO/CloudTaskManager(1740): [backupApp] pkgName[com.physicaloid.app.writer]
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[com.pdaxrom.cctools.sdlplugin] backup
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [backupApp] pkgName[com.pdaxrom.cctools.sdlplugin]
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[yz.opengl.es11] backup
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [backupApp] pkgName[yz.opengl.es11]
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[slickdevlabs.apps.usbtoserialterm] backup
03-06 18:51:10.240: INFO/CloudTaskManager(1740): [backupApp] pkgName[slickdevlabs.apps.usbtoserialterm]
03-06 18:51:10.250: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[com.example.CoffeeCatchDemo] backup
03-06 18:51:10.250: INFO/CloudTaskManager(1740): [backupApp] pkgName[com.example.CoffeeCatchDemo]
03-06 18:51:10.250: INFO/CloudTaskManager(1740): [tryBackupOneApp] pkgName[jp.ksksue.app.terminal] backup
03-06 18:51:10.250: INFO/CloudTaskManager(1740): [backupApp] pkgName[jp.ksksue.app.terminal]
03-06 18:51:10.250: INFO/ActivityManager(539): Process name.antonsmirnov.android.app (pid 5120) has died.

the code:

COFFEE_TRY() {

        debug("going to test crash\n");
        char *source_filename = NULL; // TODO : UNCOMMENT !!! (JUST FOR TEST) //string_copy(env, jfilename);
        *source_filename = '!';
        debug("no crash happened\n");

        // ...

    } COFFEE_CATCH() {
        debug("catch()");
        const char*const message = coffeecatch_get_message();
        debug("** FATAL ERROR in parseTranslationUnit(): %s\n", message);

        // cancel alarm (otherwise the process die in few seconds)
        coffeecatch_cancel_pending_alarm();

        // throw exception
        coffeecatch_throw_exception(env);
    } COFFEE_END();

[4ntoine]

case 3 (died):

03-06 19:01:03.076: ERROR/CLANG_WRAPPER(2908): going to test crash
03-06 19:01:03.116: INFO/ActivityManager(537): Process name.antonsmirnov.android.app (pid 2908) has died.
03-06 19:01:03.126: WARN/ActivityManager(537): Force removing ActivityRecord{43285098 name.antonsmirnov.android.app/.ui.MainActivity}: app died, no saved state

Not sure why it died as i have demo app and it works perfect (catches exception every time). Now i'm trying with production code and it does not catch exceptions. i've checked everything few times and i'm in stuck. Any thoughts?

[xroche]

I don't see any crash in the logs - this is most probably unrelated to coffeecatch. Do you have a simple reproducible test case ?

(Note that crashes are not exceptions, but signals - coffeecatch won't catch any C++ exceptions, if this is what you are looking for.)

[4ntoine]

according to the code above (writing to NULL pointer) signal 11 is sent and it's not catched by coffeecatch (cases 2,3) but sometimes it is catched (case 1). i've created demo app (issue 2) and coffeetaches does catch such errors all the time. i expect coffeecatch to catch it and throw java exception in this app too but the app just dies. if i comment the code above it's working good. so should coffeecatch handle such errors?

[4ntoine]

i've moved native lib from my example project (https://github.com/4ntoine/CoffeeCatchDemo) to production project and it does not catch signals at all. It must be environment or other libs affecting this or smth. Any thoughts? I can't provide production code source but I can check any code or your thoughts as i like your lib and i want to make it working in production code.

Please contact me using email dev [at] antonsmirnov [dot] name or skype anton.smirnov.skype or please leave your contact (email, skype).

[xroche]

Sorry, but unfortunately I don't have the time for that. If you are using other native libraries, first run your code without using them (without loading them at all, to prevent any static initializers)

[4ntoine]

Ok, no problem. But i don't think the issue is resolved just because you don't time to resolve it.
I'd not recommend to use the lib in production code for now unfortunately..