================
@@ -0,0 +1,80 @@
+
+
+#include "MemberPointer.h"
+#include "Context.h"
+#include "FunctionPointer.h"
+#include "Program.h"
+#include "Record.h"
+
+namespace clang {
+namespace interp {
+
+std::optional<Pointer> MemberPointer::toPointer(const Context &Ctx) const {
+ if (!Dcl || isa<FunctionDecl>(Dcl))
+ return Base;
+ const FieldDecl *FD = cast<FieldDecl>(Dcl);
+ assert(FD);
+
+ Pointer CastedBase =
+ (PtrOffset < 0 ? Base.atField(-PtrOffset) : Base.atFieldSub(PtrOffset));
+
+ // FIXME: The Base Pointer might be a dummy pointer. In that case, we can
+ // still do all of this and return yet another dummy pointer, but with the
+ // Base/Offset adjusted. However, right now we don't have the necessary type
+ // information for dummy pointers.
+ if (CastedBase.isDummy())
+ return std::nullopt;
+
+ const Record *BaseRecord = CastedBase.getRecord();
+ assert(BaseRecord);
+
+ if (FD->getParent() == BaseRecord->getDecl())
+ return CastedBase.atField(BaseRecord->getField(FD)->Offset);
+
+ unsigned Offset;
+ const RecordDecl *FieldParent = FD->getParent();
+ const Record *FieldRecord = Ctx.getRecord(FieldParent);
+
+ Offset = 0;
+ Offset += FieldRecord->getField(FD)->Offset;
+ Offset += CastedBase.block()->getDescriptor()->getMetadataSize();
+
+ if (Offset > CastedBase.block()->getSize())
+ return std::nullopt;
+
+ unsigned O = 0;
+ if (Base.getDeclPtr().getRecord()->getDecl() != FieldParent) {
+ O = Ctx.collectBaseOffset(FieldParent,
+ Pointer(const_cast<Block *>(Base.block()), 16,
16)
+ .getRecord()
+ ->getDecl());
----------------
tbaederr wrote:
This part needs some work.
https://github.com/llvm/llvm-project/pull/91303
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