From 5fc25cccff3cdbfd34d08b9c1233f9af1879018c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 9 Apr 2011 02:33:29 +0000
Subject: [PATCH] fix doc comment bug, noticed by Jochen

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129186 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/Casting.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/llvm/Support/Casting.h b/include/llvm/Support/Casting.h
index 6bb98064382..abb5a9aa11d 100644
--- a/include/llvm/Support/Casting.h
+++ b/include/llvm/Support/Casting.h
@@ -192,8 +192,8 @@ template<class To, class FromTy> struct cast_convert_val<To,FromTy,FromTy> {
 
 // cast<X> - Return the argument parameter cast to the specified type.  This
 // casting operator asserts that the type is correct, so it does not return null
-// on failure.  But it will correctly return NULL when the input is NULL.
-// Used Like this:
+// on failure.  It does not allow a null argument (use cast_or_null for that).
+// It is typically used like this:
 //
 //  cast<Instruction>(myVal)->getParent()
 //