From: Daniel Dunbar <daniel@zuster.org>
Date: Mon, 2 Mar 2009 07:00:57 +0000 (+0000)
Subject: Avoid crash when child iterator gives null result.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=82573ee7419091e5ec87e2f4fa254c7a285781d6;p=clang

Avoid crash when child iterator gives null result.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65812 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index e50b320a0c..ee17a862b1 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -111,7 +111,8 @@ static void CollectBlockDeclRefInfo(const Stmt *S,
                                     CodeGenFunction::BlockInfo &Info) {
   for (Stmt::const_child_iterator I = S->child_begin(), E = S->child_end();
        I != E; ++I)
-    CollectBlockDeclRefInfo(*I, Info);
+    if (*I)
+      CollectBlockDeclRefInfo(*I, Info);
   
   if (const BlockDeclRefExpr *DE = dyn_cast<BlockDeclRefExpr>(S)) {
     // FIXME: Handle enums.