[llvm-branch-commits] [clang] [clang] Implement pointer authentication for C++ virtual functions, v-tables, and VTTs (PR #94056)

[Anton Korobeynikov via llvm-branch-commits]

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@@ -307,10 +309,15 @@ void CodeGenFunction::EmitCallAndReturnForThunk(llvm::FunctionCallee Callee,
   const CXXMethodDecl *MD = cast<CXXMethodDecl>(CurGD.getDecl());
 
   // Adjust the 'this' pointer if necessary
+  const CXXRecordDecl *thisValueClass =
+      MD->getThisType()->getPointeeCXXRecordDecl();
+  if (Thunk)
+    thisValueClass = Thunk->ThisType->getPointeeCXXRecordDecl();
+
   llvm::Value *AdjustedThisPtr =
-    Thunk ? CGM.getCXXABI().performThisAdjustment(
-                          *this, LoadCXXThisAddress(), Thunk->This)
-          : LoadCXXThis();
+      Thunk ? CGM.getCXXABI().performThisAdjustment(*this, LoadCXXThisAddress(),
+                                                    thisValueClass, *Thunk)
----------------
asl wrote:

```suggestion
                                                    ThisValueClass, *Thunk)
```

https://github.com/llvm/llvm-project/pull/94056