I am working on a Phonegap plugin which accesses a sqlite database (it is similar to phonegap-sqlite plugin, but not same). While porting the plugin to iOS and trying to run on iPhone simulator, I am getting a crash. Here are some more information:
- iPhone 6.0 simulator, Xcode 4.5
- The first page of the app shows up fine - this page has some file handling using phonegap File object. The second page opens a database and reads a few information. I have debugged and the select statements seem to work fine, in fact, my page shows up fine on the simulator as it should be, but then I get this crash in the debugger.
- Here is the output from lldb bt:
<<
(lldb) bt
* thread #5: tid = 0x2703, 0x0267209f libobjc.A.dylib`objc_msgSend + 19, stop reason = EXC_BAD_ACCESS (code=2, address=0x0)
frame #0: 0x0267209f libobjc.A.dylib`objc_msgSend + 19
frame #1: 0x011f6cf3 Foundation`-[__NSOperationInternal dealloc] + 142
frame #2: 0x011f6c21 Foundation`-[__NSOperationInternal release] + 90
frame #3: 0x011f6bab Foundation`-[NSOperation dealloc] + 144
frame #4: 0x08f25efb DataDetectorsUI`-[DDOperation dealloc] + 387
frame #5: 0x0127ee9a Foundation`-[NSOperation release] + 164
frame #6: 0x026730c3 libobjc.A.dylib`objc_release + 51
frame #7: 0x08f21eac DataDetectorsUI`__destroy_helper_block_59 + 28
frame #8: 0x02bd6808 libsystem_sim_blocks.dylib`_Block_release + 198
frame #9: 0x047ebcca WebCore`HandleRunSource + 586
frame #10: 0x000d8f3f CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
frame #11: 0x000d896f CoreFoundation`__CFRunLoopDoSources0 + 239
frame #12: 0x000fb734 CoreFoundation`__CFRunLoopRun + 964
frame #13: 0x000faf44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #14: 0x000fae1b CoreFoundation`CFRunLoopRunInMode + 123
frame #15: 0x047eb310 WebCore`RunWebThread(void*) + 608
frame #16: 0x9ceb3ed9 libsystem_c.dylib`_pthread_start + 335
>>
- Here is the output from the log file:
<<
Crashed Thread: 2 WebThread
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000008
VM Regions Near 0x8:
--> __PAGEZERO 0000000000000000-0000000000001000 [ 4K] ---/--- SM=NUL /Users/USER/Library/Application Support/iPhone Simulator/*/<AppName>.app/<AppName>
__TEXT 0000000000001000-000000000008a000 [ 548K] r-x/rwx SM=COW /Users/USER/Library/Application Support/iPhone Simulator/*/<AppName>.app/<AppName>
Application Specific Information:
objc_msgSend() selector name: countByEnumeratingWithState:objects:count:
iPhone Simulator 358.4, iPhone OS 6.0 (iPhone/10A403)
Thread 2 Crashed:: WebThread
0 libobjc.A.dylib 0x0267209b objc_msgSend + 15
1 Foundation 0x011f6cf3 -[__NSOperationInternal dealloc] + 142
2 Foundation 0x011f6c21 -[__NSOperationInternal release] + 90
3 Foundation 0x011f6bab -[NSOperation dealloc] + 144
4 DataDetectorsUI 0x08f25efb -[DDOperation dealloc] + 387
5 Foundation 0x0127ee9a -[NSOperation release] + 164
6 libobjc.A.dylib 0x026730c3 objc_release + 51
7 DataDetectorsUI 0x08f21eac __destroy_helper_block_59 + 28
8 libsystem_sim_blocks.dylib 0x02bd6808 _Block_release + 198
9 WebCore 0x047ebcca HandleRunSource + 586
10 CoreFoundation 0x000d8f3f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
11 CoreFoundation 0x000d896f __CFRunLoopDoSources0 + 239
12 CoreFoundation 0x000fb734 __CFRunLoopRun + 964
13 CoreFoundation 0x000faf44 CFRunLoopRunSpecific + 276
14 CoreFoundation 0x000fae1b CFRunLoopRunInMode + 123
15 WebCore 0x047eb310 _ZL12RunWebThreadPv + 608
16 libsystem_c.dylib 0x9ceb3ed9 _pthread_start + 335
17 libsystem_c.dylib 0x9ceb76de thread_start + 34
>>
Any clue about where to look for issues? Seems like the WebThread is trying to release and deallocate something which is nonexistent.
Thanks for any pointers.
Regards.
