Crash (Seg fault) at getAffineMergeCand()

[mafonso]

Crash happens when encoding a low resolution 640x360 sequence using VTM 4.0, commit 2411a1a3da from Feb 15.

In Lib/CommonLib/Picture.h poc is uninitialized.

Error log:

• thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x6c)

frame #0: 0x0000000100148d5c EncoderApp`Picture::getPOC(this=0x0000000000000000) const at Picture.h:235

232 void extendPicBorder();
233 void finalInit( const SPS& sps, const PPS& pps );
234

-> 235 int getPOC() const { return poc; }

236 void setBorderExtension( bool bFlag) { m_bIsBorderExtended = bFlag;}
237 Pel* getOrigin( const PictureType &type, const ComponentID compID ) const;
238

Target 0: (EncoderApp) stopped.

BT:

• thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x6c)
• frame #0: 0x0000000100148d5c EncoderApp`Picture::getPOC(this=0x0000000000000000) const at Picture.h:235
• frame #1: 0x000000010019e3ad EncoderApp`PU::getAffineMergeCand(pu=0x00007ffeefbf9360, affMrgCtx=0x00007ffeefbf9910, mrgCandIdx=-1) at UnitTools.cpp:3811
• frame #2: 0x00000001002b0911 EncoderApp`EncCu::xCheckRDCostAffineMerge2Nx2N(this=0x00000001007d8218, tempCS=0x00007ffeefbfac40, bestCS=0x00007ffeefbfac38, partitioner=0x0000000109100050, encTestMode=0x00007ffeefbfa4c8) at EncCu.cpp:3017
• frame #3: 0x00000001002aa4fc EncoderApp`EncCu::xCompressCU(this=0x00000001007d8218, tempCS=0x00007ffeefbfac40, bestCS=0x00007ffeefbfac38, partitioner=0x0000000109100050, tempMotCandLUTs=0x00007ffeefbfac30, bestMotCandLUTs=0x00007ffeefbfac28) at EncCu.cpp:841
• frame #4: 0x00000001002a8b02 EncoderApp`EncCu::compressCtu(this=0x00000001007d8218, cs=0x0000000105ff7000, area=0x00007ffeefbfafc8, ctuRsAddr=0, prevQP=0x00007ffeefbfb308, currQP=0x00007ffeefbfb300) at EncCu.cpp:445
• frame #5: 0x00000001003542a5 EncoderApp`EncSlice::encodeCtus(this=0x00000001007d7388, pcPic=0x0000000105ff6a00, bCompressEntireSlice=false, bFastDeltaQP=false, startCtuTsAddr=0, boundingCtuTsAddr=15, pEncLib=0x000000010076dd48) at EncSlice.cpp:1673
• frame #6: 0x0000000100351593 EncoderApp`EncSlice::compressSlice(this=0x00000001007d7388, pcPic=0x0000000105ff6a00, bCompressEntireSlice=false, bFastDeltaQP=false) at EncSlice.cpp:1386
• frame #7: 0x00000001002e2dbf EncoderApp`EncGOP::compressGOP(this=0x00000001007d6f08, iPOCLast=64, iNumPicRcvd=16, rcListPic=size=24, rcListPicYuvRecOut=size=17, isField=false, isTff=false, snr_conversion=IPCOLOURSPACE_UNCHANGED, printFrameMSE=false, isEncodeLtRef=false) at EncGOP.cpp:2330
• frame #8: 0x0000000100310c5d EncoderApp`EncLib::encode(this=0x000000010076dd48, flush=false, pcPicYuvOrg=0x00007ffeefbfea90, cPicYuvTrueOrg=0x00007ffeefbfeb00, snrCSC=IPCOLOURSPACE_UNCHANGED, rcListPicYuvRecOut=size=17, iNumEncoded=0x00007ffeefbfeb7c) at EncLib.cpp:600
• frame #9: 0x000000010000a8aa EncoderApp`EncApp::encode(this=0x0000000100769000) at EncApp.cpp:711
• frame #10: 0x0000000100083778 EncoderApp`main(argc=24, argv=0x00007ffeefbff678) at encmain.cpp:153
• frame #11: 0x00007fff6dbb8015 libdyld.dylib`start + 1
• frame #12: 0x00007fff6dbb8015 libdyld.dylib`start + 1