commit 82573ee7419091e5ec87e2f4fa254c7a285781d6
author Daniel Dunbar <daniel@zuster.org> Mon Mar 02 07:00:57 2009 +0000
committer Daniel Dunbar <daniel@zuster.org> Mon Mar 02 07:00:57 2009 +0000
tree f45ecc70171c05c92f6e2a2d232977c67ee17f75
parent e1bd4e6d7c5b13462f83245865f7d9e9b6ea8486

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

lib/CodeGen/CGBlocks.cpp

diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index e50b320..ee17a86 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -111,7 +111,8 @@
                                     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.