samestep added inline comments.

================
Comment at: clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp:217
+    const Expr *Arg = MethodCall->getImplicitObjectArgument();
+    Env.ThisPointeeLoc = Env.getStorageLocation(*Arg, SkipPast::Reference);
+  }
----------------
sgatev wrote:
> samestep wrote:
> > sgatev wrote:
> > > What if `Arg` is null?
> > Good point, thanks; under what circumstances can that happen? In any case, 
> > I'm adding a guard for this.
> It can be null if the argument isn't modeled and there's no value assigned to 
> its storage location.
Hmm I don't quite follow; `Arg` just comes from calling 
`getImplicitObjectArgument` on the `CXXMemberCallExpr`, right? So shouldn't it 
only depend on the AST, and be completely independent of what we do or don't 
model?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131170/new/

https://reviews.llvm.org/D131170

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