fix PR4915, a crash in -debug mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81177 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-09-08 01:22:54 +00:00
parent ff1e98c72a
commit 45336a6f22

View File

@ -548,7 +548,9 @@ public:
o << "DFSNumbers invalid: " << SlowQueries << " slow queries.";
o << "\n";
PrintDomTree<NodeT>(getRootNode(), o, 1);
// The postdom tree can have a null root if there are no returns.
if (getRootNode())
PrintDomTree<NodeT>(getRootNode(), o, 1);
}
protected: