[llvm-commits] CVS: llvm/include/llvm/Analysis/PostDominators.h

[Chris Lattner]

Changes in directory llvm/include/llvm/Analysis:

PostDominators.h updated: 1.2 -> 1.3

---
Log message:

Do not segfault when the post-dominator tree is empty (ie, there are no return 
or unwind instructions in the function)


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Diffs of the changes:

Index: llvm/include/llvm/Analysis/PostDominators.h
diff -u llvm/include/llvm/Analysis/PostDominators.h:1.2 llvm/include/llvm/Analysis/PostDominators.h:1.3
--- llvm/include/llvm/Analysis/PostDominators.h:1.2	Wed Sep 10 15:36:51 2003
+++ llvm/include/llvm/Analysis/PostDominators.h	Mon Sep 15 10:47:40 2003
@@ -88,7 +88,8 @@
     Frontiers.clear();
     PostDominatorTree &DT = getAnalysis<PostDominatorTree>();
     Roots = DT.getRoots();
-    calculate(DT, DT.getRootNode());
+    if (const DominatorTree::Node *Root = DT.getRootNode())
+      calculate(DT, Root);
     return false;
   }