webrtc - iOS app crashed on __destroy_helper_block_ -


i using webrtc make im app video , audio.

now each time release relevant resources of webrtc, app crash.

i can see business-relevant code mytestapp __destroy_helper_block_ (mywebrtcpeer.m:0).

how can go deeper? checked posts on __destroy_helper_block_ still no clue.

sigsegv segv_accerr  crashed on thread 0  0 webrtc    rtci420scale + 196488 1 webrtc    rtci420scale + 196464 2 webrtc    rtci420scale + 222712 3 webrtc    rtci420scale + 220212 4 webrtc    rtci420scale + 220180 5 webrtc    rtci420scale + 20328 6 libobjc.a.dylib   object_cxxdestructfromclass(objc_object*, objc_class*) + 148 7 libobjc.a.dylib   objc_destructinstance + 92 8 libobjc.a.dylib   object_dispose + 28 9 mytestapp __destroy_helper_block_ (mywebrtcpeer.m:0) 10 libsystem_blocks.dylib   _block_release + 144 11 libdispatch.dylib    __dispatch_client_callout + 16 12 libdispatch.dylib    _dispatch_main_queue_callback_4cf + 1000 13 corefoundation   ___cfrunloop_is_servicing_the_main_dispatch_queue__ + 12 14 corefoundation   ___cfrunlooprun + 1660 15 corefoundation   cfrunlooprunspecific + 444 16 graphicsservices gseventrunmodal + 180 17 uikit    -[uiapplication _run] + 684 18 uikit    uiapplicationmain + 208 19 mytestapp    main (main.m:14) 20 libdyld.dylib    _start + 4


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