Reply To: Mixing JSGF and default using changeLanguageModelToFile

[ekobres]

I got your minimal replication case to crash:

remove firstLanguageArray and secondLanguageArray

instead declare them both as NSDictionaries:

    NSDictionary *firstLanguageDictionary = @{
                                              ThisWillBeSaidOnce : @[
                                                      @{ OneOfTheseCanBeSaidWithOptionalRepetitions : @[
                                                                 @"BACKWARD",
                                                                 @"CHANGE",
                                                                 @"FORWARD",
                                                                 @"GO",
                                                                 @"LEFT",
                                                                 @"MODEL",
                                                                 @"RIGHT",
                                                                 @"TURN"]}
                                                      ]
                                              };
...
    NSDictionary *secondLanguageDictionary = @{
                                               ThisWillBeSaidOnce : @[
                                                       @{ OneOfTheseCanBeSaidWithOptionalRepetitions : @[
                                                                  @"SUNDAY",
                                                                  @"MONDAY",
                                                                  @"TUESDAY",
                                                                  @"WEDNESDAY",
                                                                  @"THURSDAY",
                                                                  @"FRIDAY",
                                                                  @"SATURDAY",
                                                                  @"QUIDNUNC",
                                                                  @"CHANGE MODEL"]}
                                                       ]
                                               };

The languageModelGenerator calls become:

    NSError *error = [languageModelGenerator generateGrammarFromDictionary:firstLanguageDictionary withFilesNamed:@"FirstOpenEarsDynamicLanguageModel" forAcousticModelAtPath:[OEAcousticModel pathToModel:@"AcousticModelEnglish"]];
...
    error = [languageModelGenerator generateGrammarFromDictionary:secondLanguageDictionary withFilesNamed:@"SecondOpenEarsDynamicLanguageModel" forAcousticModelAtPath:[OEAcousticModel pathToModel:@"AcousticModelEnglish"]];

The dictionary path assignments become:

        self.pathToFirstDynamicallyGeneratedLanguageModel = [languageModelGenerator pathToSuccessfullyGeneratedGrammarWithRequestedName:@"FirstOpenEarsDynamicLanguageModel"];
...
        self.pathToSecondDynamicallyGeneratedLanguageModel = [languageModelGenerator pathToSuccessfullyGeneratedGrammarWithRequestedName:@"SecondOpenEarsDynamicLanguageModel"];

Now run the app and say a few words to prove it’s working.
Next say “CHANGE MODEL”

My version crashes (on another thread) while executing this line:

[self.fliteController say:[NSString stringWithFormat:@"You said %@",hypothesis] withVoice:self.slt];

here’s the backtrace:

(lldb) bt
* thread #10: tid = 0x209f8, 0x000000010008322c OpenEarsSampleApp`
fsg_lextree_init + 516, queue = ‘com.apple.root.default-qos’, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
* frame #0: 0x000000010008322c OpenEarsSampleApp`fsg_lextree_init + 516
frame #1: 0x0000000100047ef0 OpenEarsSampleApp`fsg_search_reinit + 92
frame #2: 0x000000010001a968 OpenEarsSampleApp`ps_load_dict + 364
frame #3: 0x000000010002e37c OpenEarsSampleApp`usenglish_init + 7008
frame #4: 0x000000010002d16c OpenEarsSampleApp`usenglish_init + 2384
frame #5: 0x000000010002cda8 OpenEarsSampleApp`usenglish_init + 1420
frame #6: 0x0000000100670f94 libdispatch.dylib`_dispatch_client_callout + 16
frame #7: 0x0000000100688848 libdispatch.dylib`_dispatch_source_latch_and_call + 1392
frame #8: 0x00000001006731c0 libdispatch.dylib`_dispatch_source_invoke + 292
frame #9: 0x000000010067e5d4 libdispatch.dylib`_dispatch_root_queue_drain + 772
frame #10: 0x0000000100680248 libdispatch.dylib`_dispatch_worker_thread3 + 132
frame #11: 0x0000000194f2522c libsystem_pthread.dylib`_pthread_wqthread + 816
</blockquote>

The fatal call was this one:

[[OEPocketsphinxController sharedInstance] changeLanguageModelToFile:self.pathToSecondDynamicallyGeneratedLanguageModel withDictionary:self.pathToSecondDynamicallyGeneratedDictionary];

Please let me know if you are unable to replicate. Happens for me every time.

-Erick