choller wrote:
I looked into Tom's bug report and I hit the following assertion in a debug
build:
```
clang:
/srv/repos/llvm-project/clang/lib/StaticAnalyzer/Core/DynamicType.cpp:134:
clang::ento::ProgramStateRef
clang::ento::setDynamicTypeAndCastInfo(clang::ento::ProgramStateRef, const
clang::ento::MemRegion*, clang::QualType, clang::QualType, bool): Assertion
`(CastToTy->isAnyPointerType() || CastToTy->isReferenceType()) &&
"DynamicTypeInfo should always be a pointer."' failed.
```
I was also able to greatly reduce the CPP testfile:
```
class c {};
class e : public c {};
class g {
c &d();
e &i() { return static_cast<e &>(d()); }
};
```
If I output the `QualType` information in `fromTy` and `toTy` right before the
assertion, I get this:
```
From:
ElaboratedType 0x55be9d7264b0 'c' sugar
`-RecordType 0x55be9d726260 'class c'
`-CXXRecord 0x55be9d7261d0 'c'
To:
ElaboratedType 0x55be9d726940 'e' sugar
`-RecordType 0x55be9d726420 'class e'
`-CXXRecord 0x55be9d726390 'e'
```
What I don't understand is why these are not reference types. @steakhal do you
know more here?
https://github.com/llvm/llvm-project/pull/69057
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