Upon using the tip of JUCE I get consistent crashes:
I/DEBUG ( 182): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG ( 182): Build fingerprint: 'Android/aosp_hammerhead/hammerhead:5.0/LRX21O/builder11211238:eng/test-keys'
I/DEBUG ( 182): Revision: '11'
I/DEBUG ( 182): ABI: 'arm'
I/DEBUG ( 182): pid: 3268, tid: 3310, name: Thread-300 >>> com.domain.MyApp <<<
I/DEBUG ( 182): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0xc8
I/DEBUG ( 182): Abort message: 'art/runtime/thread.cc:1019] Native thread exited without calling DetachCurrentThread: Thread[22,tid=3310,Native,Thread*=0xaf9
68400,peer=0x12d9e080,"Thread-300"]'
I/DEBUG ( 182): r0 00000000 r1 a2803db0 r2 fffffa98 r3 0000000c
I/DEBUG ( 182): r4 c985d93a r5 a2803a60 r6 b4ffeffc r7 fffffa9c
I/DEBUG ( 182): r8 703afce0 r9 00000000 sl 703afce0 fp 719bbb00
I/DEBUG ( 182): ip b4ffca7c sp a2803888 lr b4f5aef1 pc b4f5aef0 cpsr 80070030
I/DEBUG ( 182):
I/DEBUG ( 182): backtrace:
I/DEBUG ( 182): #00 pc 00261ef0 /system/lib/libart.so (art::verifier::MethodVerifier::FindLocksAtDexPc(art::mirror::ArtMethod*, unsigned int, std::__1::
vector<unsigned int, std::__1::allocator<unsigned int> >*)+59)
I/DEBUG ( 182): #01 pc 001f41fd /system/lib/libart.so (art::Monitor::VisitLocks(art::StackVisitor*, void (*)(art::mirror::Object*, void*), void*, bool)+
252)
I/DEBUG ( 182): #02 pc 00233a1f /system/lib/libart.so (art::StackDumpVisitor::VisitFrame()+374)
I/DEBUG ( 182): #03 pc 0022dc03 /system/lib/libart.so (art::StackVisitor::WalkStack(bool)+702)
I/DEBUG ( 182): #04 pc 002361e1 /system/lib/libart.so (art::Thread::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) const+224)
I/DEBUG ( 182): #05 pc 0023f335 /system/lib/libart.so (art::ThreadList::DumpLocked(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+120)
I/DEBUG ( 182): #06 pc 00225da9 /system/lib/libart.so (art::AbortState::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+272)
I/DEBUG ( 182): #07 pc 00225ff3 /system/lib/libart.so (art::Runtime::Abort()+82)
I/DEBUG ( 182): #08 pc 000a72e9 /system/lib/libart.so (art::LogMessage::~LogMessage()+1360)
I/DEBUG ( 182): #09 pc 002337ff /system/lib/libart.so (art::Thread::ThreadExitCallback(void*)+186)
I/DEBUG ( 182): #10 pc 00016955 /system/lib/libc.so (pthread_key_clean_all()+80)
I/DEBUG ( 182): #11 pc 000165d3 /system/lib/libc.so (pthread_exit+30)
I/DEBUG ( 182): #12 pc 000162e5 /system/lib/libc.so (__pthread_start(void*)+32)
I/DEBUG ( 182): #13 pc 000142d3 /system/lib/libc.so (__start_thread+6)
I/DEBUG ( 182):
I/DEBUG ( 182): Tombstone written to: /data/tombstones/tombstone_02
It seems to be related to this: http://stackoverflow.com/questions/26534304/android-jni-call-attachcurrentthread-without-detachcurrentthread