running different version from its build directory?

[René J.V. Bertin]

On Saturday September 28 2019 19:30:05 Kevin Funk wrote:

Hi,

>> Nothing wrong, probably, I just didn't think of that. I build with full
>> rpath info on Linux (it's the default on Mac) so I shouldn't have to set
>> LD_LIBRARY_PATH. I'd have to figure out how to let Qt look for plugins in
>> an additional directory though.
>
>Hint: QT_PLUGIN_PATH

This turns out to be a lot trickier than I hoped... I *think* I'm getting the test build to load its own plugins but then I get the weird transition below from a test library to an installed one. Evidently that leads to a crash later on because of an unititialised member variable:

* thread #10, name = 'Queue(0x10c09d0', stop reason = signal SIGSEGV: invalid address (fault address: 0x10)
    frame #0: 0x00007fffa81aa377 libKDevPlatformLanguage.so.53`KDevelop::TypeFactory<KDevelop::FunctionType, KDevelop::FunctionTypeData>::dynamicSize(KDevelop::AbstractTypeData const&) const [inlined] QArrayData::data(this=0x0000000000000000) at qarraydata.h:61:47
    frame #1: 0x00007fffa81aa377 libKDevPlatformLanguage.so.53`KDevelop::TypeFactory<KDevelop::FunctionType, KDevelop::FunctionTypeData>::dynamicSize(KDevelop::AbstractTypeData const&) const [inlined] QTypedArrayData<KDevVarLengthArray<KDevelop::IndexedType, 10>*>::data(this=0x0000000000000000) at qarraydata.h:206
..SNIP..
    frame #9: 0x00007fffa81aa357 libKDevPlatformLanguage.so.53`KDevelop::TypeFactory<KDevelop::FunctionType, KDevelop::FunctionTypeData>::dynamicSize(this=<unavailable>, data=0x00007fff78d90ec0) const at typeregister.h:117
    frame #10: 0x00007ffff69865e3 libKDevPlatformLanguage.so.54`KDevelop::TypeSystem::dynamicSize(this=0x00007ffff7a56d50, data=0x00007fff78d90ec0) const at typeregister.cpp:47:49
    frame #11: 0x00007ffff69872c5 libKDevPlatformLanguage.so.54`KDevelop::ItemRepository<KDevelop::AbstractTypeData, KDevelop::AbstractTypeDataRequest, true, true, 0u, 1048576u>::index(KDevelop::AbstractTypeDataRequest const&) [inlined] KDevelop::AbstractTypeDataRequest::itemSize(this=0x00007fff9cfa9b08) const at typerepository.cpp:52:35
  * frame #12: 0x00007ffff69872b0 libKDevPlatformLanguage.so.54`KDevelop::ItemRepository<KDevelop::AbstractTypeData, KDevelop::AbstractTypeDataRequest, true, true, 0u, 1048576u>::index(this=0x00007fffc9d8f010, request=0x00007fff9cfa9b08) at itemrepository.h:1194
    frame #13: 0x00007ffff6986ee7 libKDevPlatformLanguage.so.54`KDevelop::TypeRepository::indexForType(input=0x00007fff9cfa9b70) at typerepository.cpp:122:32
    frame #14: 0x00007ffff69908d4 libKDevPlatformLanguage.so.54`KDevelop::IndexedType::IndexedType(this=0x00007fff9cfa9b98, type=<unavailable>) at indexedtype.cpp:26:15
    frame #15: 0x00007ffff698d048 libKDevPlatformLanguage.so.54`KDevelop::AbstractType::indexed(this=<unavailable>) const at abstracttype.cpp:99:12
    frame #16: 0x00007ffff692eecf libKDevPlatformLanguage.so.54`KDevelop::Declaration::setAbstractType(this=0x00007fff78d91d10, type=Ptr @ 0x00007fff9cfa9bc8) at declaration.cpp:254:30
    frame #17: 0x00007ffff694ee22 libKDevPlatformLanguage.so.54`KDevelop::FunctionDeclaration::setAbstractType(this=0x00007fff78d91d10, type=<unavailable>) at functiondeclaration.cpp:74:18
    frame #18: 0x00007fffa51f19b9 libKDevClangPrivate.so.32`CXChildVisitResult (anonymous namespace)::Visitor::dispatchCursor<(CXCursorKind)30, (Decision)2, (detail::enabler)0>(CXCursor, CXCursor) [inlined] void (anonymous namespace)::Visitor::setDeclType<(CXCursorKind)30>(KDevelop::Declaration*, KDevelop::AbstractType*) at builder.cpp:862:15