Add a missing assertion that would have helped out Reid

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28746 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index 3351385d0a..3b55b652c0 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -863,6 +863,8 @@ static ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
 static char getValType(ConstantAggregateZero *CPZ) { return 0; }
 
 Constant *ConstantAggregateZero::get(const Type *Ty) {
+  assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<PackedType>(Ty)) &&
+         "Cannot create an aggregate zero of non-aggregate type!");
   return AggZeroConstants.getOrCreate(Ty, 0);
 }