Make getContainedType more efficient by not returning null if out of range!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8987 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 4 deletions

diff --git a/include/llvm/Type.h b/include/llvm/Type.h
index 5900b402dc..3ed2d2dd7a 100644
--- a/include/llvm/Type.h
+++ b/include/llvm/Type.h
@@ -202,11 +202,11 @@ public:
 
   /// getContainedType - This method is used to implement the type iterator
   /// (defined a the end of the file).  For derived types, this returns the
-  /// types 'contained' in the derived type, returning 0 when 'i' becomes
-  /// invalid. This allows the user to iterate over the types in a struct, for
-  /// example, really easily.
+  /// types 'contained' in the derived type.
   ///
-  virtual const Type *getContainedType(unsigned i) const { return 0; }
+  virtual const Type *getContainedType(unsigned i) const {
+    assert(0 && "No contained types!");
+  }
 
   /// getNumContainedTypes - Return the number of types in the derived type
   virtual unsigned getNumContainedTypes() const { return 0; }