(gdb) bt full
#0  clear (this=<optimized out>) at /usr/include/c++/4.8.1/bits/stl_set.h:629
No locals.
#1  clear (this=<optimized out>) at buildgraph/artifactlist.h:83
No locals.
#2  qbs::Internal::ProductBuildData::load (this=0xb73a7e30, pool=...)
    at buildgraph/productbuilddata.cpp:63
        k = 0
        i = 46
#3  0x410a8795 in loadRaw<qbs::Internal::ProductBuildData> (id=<optimized out>, 
    this=<optimized out>) at tools/persistence.h:170
        i = <optimized out>
        obj = 0xb73a7e30
#4  idLoad<qbs::Internal::ProductBuildData> (this=<optimized out>)
    at tools/persistence.h:115
        id = 530
#5  qbs::Internal::ResolvedProduct::load (this=0xb6412ad8, pool=...)
    at language/language.cpp:373
No locals.
#6  0x410a64f6 in load<qbs::Internal::ResolvedProduct> (id=412, this=<optimized out>)
    at tools/persistence.h:188
        obj = {<QtSharedPointer::ExternalRefCount<qbs::Internal::PersistentObject>> = {<QtSharedPointer::Basic<qbs::Internal::PersistentObject>> = {value = 0xb6412ad8}, 
---Type <return> to continue, or q <return> to quit---
            d = 0xb6412b40}, <No data fields>}
#7  idLoadS<qbs::Internal::ResolvedProduct> (this=<optimized out>)
    at tools/persistence.h:132
        id = 412
#8  qbs::Internal::ResolvedProject::load (this=this@entry=0xb73103e0, pool=...)
    at language/language.cpp:629
        rProduct = {<QtSharedPointer::ExternalRefCount<qbs::Internal::ResolvedProduct>> = {<QtSharedPointer::Basic<qbs::Internal::ResolvedProduct>> = {value = 0xb7310658}, 
            d = 0xb73106c0}, <No data fields>}
        fileName = {static null = {<No data fields>}, static shared_null = {ref = {
              _q_value = 1}, alloc = 0, size = 0, data = 0x80754d2, clean = 0, 
            simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
            reserved = 0, array = {0}}, static shared_empty = {ref = {
              _q_value = 596}, alloc = 0, size = 0, 
            data = 0x4abf59be <QString::shared_empty+18>, clean = 0, simpletext = 0, 
            righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
              0}}, d = 0xb7310570, static codecForCStrings = 0x0}
        line = 4
        column = 1
        count = 0
#9  0x410a6867 in qbs::Internal::TopLevelProject::load (this=0xb73103e0, pool=...)
    at language/language.cpp:720
---Type <return> to continue, or q <return> to quit---
        envHash = {{d = 0xb7c2d168, e = 0xb7c2d168}}
#10 0x4103e03d in qbs::Internal::BuildGraphLoader::load (this=this@entry=0xb7c2d19c, 
    parameters=..., evalContext=...) at buildgraph/buildgraphloader.cpp:129
        pool = {m_stream = {
            _vptr.QDataStream = 0x4abf27a0 <vtable for QDataStream+8>, d = {d = 0x0}, 
            dev = 0xb730b750, owndev = false, noswap = false, 
            byteorder = QDataStream::BigEndian, ver = 12, 
            q_status = QDataStream::ReadPastEnd}, m_headData = {projectConfig = {{
                d = 0xb730b800, e = 0xb730b800}}}, m_loadedRaw = {{d = 0xb64b1740, 
              p = 0xb64b1740}}, m_loaded = {{d = 0xb646d188, p = 0xb646d188}}, 
          m_storageIndices = {{d = 0x80756e0, e = 0x80756e0}}, 
          m_lastStoredObjectId = 2, m_stringStorage = {{d = 0xb64d6d80, 
              p = 0xb64d6d80}}, m_inverseStringStorage = {{d = 0x80756e0, 
              e = 0x80756e0}}, m_lastStoredStringId = 0, m_logger = {m_logSink = 
    0x80757b4}}
        project = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {value = 0xb73103e0}, 
            d = 0xb730b850}, <No data fields>}
        projectId = {static null = {<No data fields>}, static shared_null = {ref = {
              _q_value = 1}, alloc = 0, size = 0, data = 0x80754d2, clean = 0, 
            simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
            reserved = 0, array = {0}}, static shared_empty = {ref = {
---Type <return> to continue, or q <return> to quit---
              _q_value = 596}, alloc = 0, size = 0, 
            data = 0x4abf59be <QString::shared_empty+18>, clean = 0, simpletext = 0, 
            righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
              0}}, d = 0xb730b720, static codecForCStrings = 0x0}
        buildDir = {static null = {<No data fields>}, static shared_null = {ref = {
              _q_value = 1}, alloc = 0, size = 0, data = 0x80754d2, clean = 0, 
            simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
            reserved = 0, array = {0}}, static shared_empty = {ref = {
              _q_value = 596}, alloc = 0, size = 0, 
            data = 0x4abf59be <QString::shared_empty+18>, clean = 0, simpletext = 0, 
            righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
              0}}, d = 0xb730b958, static codecForCStrings = 0x0}
        buildGraphFilePath = {static null = {<No data fields>}, static shared_null = {
            ref = {_q_value = 1}, alloc = 0, size = 0, data = 0x80754d2, clean = 0, 
            simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
            reserved = 0, array = {0}}, static shared_empty = {ref = {
              _q_value = 596}, alloc = 0, size = 0, 
            data = 0x4abf59be <QString::shared_empty+18>, clean = 0, simpletext = 0, 
            righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
              0}}, d = 0xb730ba68, static codecForCStrings = 0x0}
#11 0x4101ddc2 in qbs::Internal::InternalSetupProjectJob::restoreProject (
    this=this@entry=0x8081ba8, evalContext=...) at api/internaljobs.cpp:249
---Type <return> to continue, or q <return> to quit---
        bgLoader = {
          m_evalContext = {<QtSharedPointer::ExternalRefCount<qbs::Internal::RulesEvaluationContext>> = {<QtSharedPointer::Basic<qbs::Internal::RulesEvaluationContext>> = {
                value = 0xb730a1e0}, d = 0xb730b030}, <No data fields>}, m_result = {
            newlyResolvedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {
                  value = 0x0}, d = 0x0}, <No data fields>}, 
            loadedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {
                  value = 0x0}, d = 0x0}, <No data fields>}, 
            discardLoadedProject = false}, m_logger = {m_logSink = 0x80757b4}, 
          m_environment = {d = {d = 0x80a19b0}}}
        loadResult = {
          newlyResolvedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {
                value = 0x80757b4}, d = 0xb7c2d240}, <No data fields>}, 
          loadedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {value = 0x0}, 
              d = 0xb7c2d23c}, <No data fields>}, discardLoadedProject = false}
#12 0x4101e491 in qbs::Internal::InternalSetupProjectJob::execute (
    this=this@entry=0x8081ba8) at api/internaljobs.cpp:202
        loadResult = {
---Type <return> to continue, or q <return> to quit---
          newlyResolvedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {
                value = 0x80757b4}, d = 0xb7c2d240}, <No data fields>}, 
          loadedProject = {<QtSharedPointer::ExternalRefCount<qbs::Internal::TopLevelProject>> = {<QtSharedPointer::Basic<qbs::Internal::TopLevelProject>> = {value = 0x0}, 
              d = 0xb7c2d23c}, <No data fields>}, discardLoadedProject = false}
        evalContext = {<QtSharedPointer::ExternalRefCount<qbs::Internal::RulesEvaluationContext>> = {<QtSharedPointer::Basic<qbs::Internal::RulesEvaluationContext>> = {
              value = 0xb730a1e0}, d = 0xb730b030}, <No data fields>}
#13 0x4101e8bf in qbs::Internal::InternalSetupProjectJob::doResolve (this=0x8081ba8)
    at api/internaljobs.cpp:178
        locker = <optimized out>
#14 0x4101f7c1 in QtConcurrent::VoidStoredMemberFunctionPointerCall0<void, qbs::Internal::InternalSetupProjectJob>::runFunctor (this=0x809b5a8)
    at /usr/include/QtCore/qtconcurrentstoredfunctioncall.h:209
No locals.
#15 0x4101f8aa in QtConcurrent::RunFunctionTask<void>::run (this=0x809b5a8)
    at /usr/include/QtCore/qtconcurrentrunbase.h:134
No locals.
#16 0x4a968240 in QThreadPoolThread::run (this=0x80a3cb8)
    at concurrent/qthreadpool.cpp:107
        r = 0x809b5b0
---Type <return> to continue, or q <return> to quit---
        expired = <optimized out>
        locker = <optimized out>
#17 0x4a975470 in QThreadPrivate::start (arg=0x80a3cb8) at thread/qthread_unix.cpp:338
        __clframe = {__cancel_routine = 0x4a974360 <QThreadPrivate::finish(void*)>, 
          __cancel_arg = 0x80a3cb8, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x80a3cb8
        data = <optimized out>
        objectName = {static null = {<No data fields>}, static shared_null = {ref = {
              _q_value = 1}, alloc = 0, size = 0, data = 0x80754d2, clean = 0, 
            simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
            reserved = 0, array = {0}}, static shared_empty = {ref = {
              _q_value = 596}, alloc = 0, size = 0, 
            data = 0x4abf59be <QString::shared_empty+18>, clean = 0, simpletext = 0, 
            righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
              0}}, d = 0x8088408, static codecForCStrings = 0x0}
#18 0x4a2489da in start_thread (arg=0xb7c2db40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb7c2db40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {1243975680, -1211966656, 4001536, 
                -1211968472, 1227643844, -2053633473}, mask_was_saved = 0}}, priv = {
            pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
---Type <return> to continue, or q <return> to quit---
              canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
#19 0x4a13492e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
(gdb)