Crash in QV4::Function::Function on ppc64

Thread 1 "qmlplugindump-q" received signal SIGSEGV, Segmentation fault.
0x00007ffff74d6528 in QV4::Function::Function (this=0x1003e83d0, engine=0x1000b5000, unit=<optimized out>, function=<optimized out>, codePtr=<optimized out>)
    at /usr/include/qt5/QtCore/qendian.h:232
232	    operator T() const { return S::fromSpecial(val); }
#0  0x00007ffff74d6528 in QV4::Function::Function (this=0x1003e83d0, engine=0x1000b5000, unit=<optimized out>, function=<optimized out>, codePtr=<optimized out>)
    at /usr/include/qt5/QtCore/qendian.h:232
#1  0x00007ffff742da5c in QV4::CompiledData::CompilationUnit::linkBackendToEngine (this=0x1003aa720, engine=0x1000b5000)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/compiler/qv4compileddata.cpp:370
#2  0x00007ffff742dedc in QV4::CompiledData::CompilationUnit::linkToEngine (this=0x1003aa720, engine=<optimized out>)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/compiler/qv4compileddata.cpp:182
#3  0x00007ffff769c620 in QQmlObjectCreator::init (this=0x7fffffffe9f8, providedParentContext=<optimized out>)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlobjectcreator.cpp:121
#4  0x00007ffff769c9e8 in QQmlObjectCreator::QQmlObjectCreator (this=<optimized out>, parentContext=<optimized out>, compilationUnit=<error reading variable: value has been optimized out>, 
    inheritedSharedState=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlobjectcreator.cpp:111
#5  0x00007ffff76a0e14 in QQmlObjectCreator::createInstance (this=0x1003b5c20, index=<optimized out>, parent=0x0, isContextObject=<optimized out>)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlobjectcreator.cpp:1201
#6  0x00007ffff76a48f0 in QQmlObjectCreator::create (this=0x1003b5c20, subComponentIndex=<optimized out>, parent=0x0, interrupt=0x0)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlobjectcreator.cpp:203
#7  0x00007ffff75d8ef8 in QQmlComponentPrivate::beginCreate (this=0x1002df090, context=<optimized out>)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlcomponent.cpp:868
#8  0x00007ffff75d930c in QQmlComponent::beginCreate (this=<optimized out>, publicContext=<optimized out>)
    at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlcomponent.cpp:817
#9  0x00007ffff75d64dc in QQmlComponent::create (this=0x7fffffffef38, context=0x100105cb0) at /usr/src/debug/libqt5-qtdeclarative-5.11.2-1.1.ppc64/src/qml/qml/qqmlcomponent.cpp:777
#10 0x000000010001e684 in ?? ()
#11 0x000000010000c5f4 in ?? ()
#12 0x00007ffff55b8888 in .generic_start_main.isra () from /lib64/libc.so.6
#13 0x00007ffff55b8ac4 in .__libc_start_main () from /lib64/libc.so.6
#14 0x0000000000000000 in ?? ()