[clang] [clang] Add support for relaxed constexpr evaluation to interpreter (PR #217311)

[Timm Baeder via cfe-commits]

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@@ -535,6 +535,8 @@ bool CheckNull(InterpState &S, CodePtr OpPC, const Pointer &Ptr,
   if (!Ptr.isZero())
     return true;
   const SourceInfo &Loc = S.Current->getSource(OpPC);
+  if (S.shouldRelaxDiag(Loc.getLoc(), diag::note_constexpr_null_subobject))
+    return true;
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tbaederr wrote:

Looks like this should be moved to `getField()`?

https://github.com/llvm/llvm-project/pull/217311