It's possible to have a "UnresolvedUsingValueDecl" with a "CXXConstructorName". If that's the case (or if there's any other unkown decl) bail instead of crashing.
* Update tests that relied on old behavior.
* Use mangleCXXName instead of mangleCXXCtor.
* Call VisitCXXRecordDecl not VisitRecordDecl from
VisitClassTemplateSpecializationDecl. This allows template constructors
to be imported and called correctly.
- Adapt tests to changes that have happened in the meantime (e.g.
`HasVirtualBase` is rightly no longer considered loadable)
- Don't import copy or move constructors (noticed this because
references are now imported correctly, so copy and move constructors
suddenly started showing up in the SIL test)
- Don't try to define an implicitly-deleted default constructor (this
previously broke loadable-types-silgen.swift)
The current "ClangRecordTypeInfo" derives from "LoadableTypeInfo" and is
only meant for loadable types. While we have not yet run into problems,
this may cause issues in the future and as more logic is needed around
copying, moving, and destroying C++ objects, this needs to be fixed.
When we try to emit debug info from C++ types we crash because we can't deserialize them. This is a temporary fix to circumnavigate the crash before a real fix can be created.
The copy and move assignment operators weren't returning anything and
were hence producing "non-void function does not return a value"
warnings.
As the test doesn't actually need a definition for these operators, I've
removed the definition and simply declared them.
Currently, trying to do this causes an assertion failure in SILGen, so the
corresponding line in the SILGen test is commented out.
See https://bugs.swift.org/browse/SR-12750
This imports const members of C++ structs/classes stored properties with
an inaccessible setter.
Note that in C++ there are ways to change the values of const members,
so we don't use `WriteImplKind::Immutable` storage.
Resolves: [SR-12463](https://bugs.swift.org/browse/SR-12463)
