[clang] [Clang] Diagnose invalid object size kinds during constant evaluation (PR #230979)

[via cfe-commits]

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@@ -17176,10 +17176,13 @@ bool IntExprEvaluator::VisitBuiltinCallExpr(const CallExpr *E,
 
   case Builtin::BI__builtin_dynamic_object_size:
   case Builtin::BI__builtin_object_size: {
-    // The type was checked when we built the expression.
-    unsigned Type =
-        E->getArg(1)->EvaluateKnownConstInt(Info.Ctx).getZExtValue();
-    assert(Type <= 3 && "unexpected type");
+    APSInt TypeValue = E->getArg(1)->EvaluateKnownConstInt(Info.Ctx);
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keepyixiao wrote:

Thanks for pointing this out. I will handle the unevaluable argument case in
a follow-up PR and track it in #231108.

https://github.com/llvm/llvm-project/pull/230979