[llvm-commits] CVS: llvm/lib/Analysis/DataStructure/DataStructure.cpp

[Chris Lattner]

Changes in directory llvm/lib/Analysis/DataStructure:

DataStructure.cpp updated: 1.201 -> 1.202
---
Log message:

Don't crash if computing a mapping to a node with zero size


---
Diffs of the changes:  (+2 -0)

 DataStructure.cpp |    2 ++
 1 files changed, 2 insertions(+)


Index: llvm/lib/Analysis/DataStructure/DataStructure.cpp
diff -u llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.201 llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.202
--- llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.201	Mon Mar 14 18:58:16 2005
+++ llvm/lib/Analysis/DataStructure/DataStructure.cpp	Mon Mar 14 22:40:24 2005
@@ -2075,6 +2075,8 @@
   // mapping the edges together now.
   int N2Idx = NH2.getOffset()-NH1.getOffset();
   unsigned N2Size = N2->getSize();
+  if (N2Size == 0) return;   // No edges to map to.
+
   for (unsigned i = 0, e = N1->getSize(); i < e; i += DS::PointerSize)
     if (unsigned(N2Idx)+i < N2Size)
       computeNodeMapping(N1->getLink(i), N2->getLink(N2Idx+i), NodeMap);