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The `Variant` class has separate implementations for its move and copy constructors/assignment operators depending on whether the classes it holds can be trivially moved. If the objects are trivial, Variant is trivial as well. However, in the case where the objects are not trivial, special construction and copying needs to be done. Previously, the non-trivial `Variant` defined a move constructor that did a byte copy of the contained object and reset the right hand side object so that it did not attempt to destroy the object. That usually works because it guarantees that only one version of the `Variant` will attempt to destroy the object and its resources should be cleaned up correctly. But C++ is a funny language that lets you do weird things. Turns out there are cases where moving the location of memory for an object without calling the proper copy method can invalidate the object. For example, if the object holds a pointer to one of its own members, that pointer will become invalid. Also, if it points to something that points back, then the object will need to update those pointers when it is moved. GCC's version of `std::string` seems to be a type like this. Solve the problem by simply deleting the move constructors. The copy constructors and destructor will be called instead to properly manage the object. A test for these conditions is added to `UnitTestVariant`. |
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| .. | ||
| testing | ||
| .gitattributes | ||
| ArrayPortalBasic.h | ||
| ArrayPortalHelpers.h | ||
| ArrayPortalUniformPointCoordinates.h | ||
| ArrayPortalValueReference.h | ||
| ArrayPortalVirtual.h | ||
| Assume.h | ||
| brigand.hpp | ||
| CMakeLists.txt | ||
| Configure.h.in | ||
| ConfigureFor32.h | ||
| ConfigureFor64.h | ||
| ConnectivityStructuredInternals.h | ||
| DecayHelpers.h | ||
| ExportMacros.h | ||
| FunctionInterface.h | ||
| FunctionInterfaceDetailPost.h | ||
| FunctionInterfaceDetailPost.h.in | ||
| FunctionInterfaceDetailPre.h | ||
| FunctionInterfaceDetailPre.h.in | ||
| IndexTag.h | ||
| IndicesExtrude.h | ||
| Invocation.h | ||
| Unreachable.h | ||
| VariantImpl.h | ||
| VariantImplDetail.h | ||
| VariantImplDetail.h.in | ||
| VecOperators.h | ||
| VecOperators.h.in | ||
| Windows.h | ||