[clang] [analyzer] Support pack indexing expressions (PR #173186)

[via cfe-commits]

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@@ -3447,6 +3461,22 @@ void ExprEngine::VisitArrayInitLoopExpr(const ArrayInitLoopExpr *Ex,
   getCheckerManager().runCheckersForPostStmt(Dst, EvalSet, Ex, *this);
 }
 
+void ExprEngine::VisitPackIndexingExpr(const PackIndexingExpr *E,
+                                       ExplodedNode *Pred,
+                                       ExplodedNodeSet &Dst) {
+  if (!E->isFullySubstituted()) {
+    llvm_unreachable("Unsubstituted pack indexing expression");
+  }
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lbonn wrote:

Thanks!

https://github.com/llvm/llvm-project/pull/173186