[llvm-commits] [llvm] r109075 - /llvm/trunk/include/llvm/CodeGen/LiveInterval.h

[Lang Hames]

Author: lhames
Date: Wed Jul 21 21:05:10 2010
New Revision: 109075

URL: http://llvm.org/viewvc/llvm-project?rev=109075&view=rev
Log:
If 'other' was empty 'overlapsFrom(other, other.begin());' will segfault. This avoids that.

Modified:
    llvm/trunk/include/llvm/CodeGen/LiveInterval.h

Modified: llvm/trunk/include/llvm/CodeGen/LiveInterval.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/LiveInterval.h?rev=109075&r1=109074&r2=109075&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/LiveInterval.h (original)
+++ llvm/trunk/include/llvm/CodeGen/LiveInterval.h Wed Jul 21 21:05:10 2010
@@ -465,6 +465,8 @@
     /// overlaps - Return true if the intersection of the two live intervals is
     /// not empty.
     bool overlaps(const LiveInterval& other) const {
+      if (other.empty())
+        return false;
       return overlapsFrom(other, other.begin());
     }