1 files changed, 7 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 562c98c..ae40895 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -16592,6 +16592,13 @@ ExprResult Sema::BuildVAArgExpr(SourceLocation BuiltinLoc,
         << TInfo->getTypeLoc().getSourceRange();
     }
 
+    if (TInfo->getType()->isArrayType()) {
+      DiagRuntimeBehavior(TInfo->getTypeLoc().getBeginLoc(), E,
+                          PDiag(diag::warn_second_parameter_to_va_arg_array)
+                              << TInfo->getType()
+                              << TInfo->getTypeLoc().getSourceRange());
+    }
+
     // Check for va_arg where arguments of the given type will be promoted
     // (i.e. this va_arg is guaranteed to have undefined behavior).
     QualType PromoteType;