If 'other' was empty 'overlapsFrom(other, other.begin());' will segfault. This avoids that.

llvm-svn: 109075
2010-07-22 02:05:10 +00:00 · 2010-07-22 02:05:10 +00:00 · 1cb63afb44
parent 6d48476446
commit 1cb63afb44
1 changed files with 2 additions and 0 deletions
--- a/llvm/include/llvm/CodeGen/LiveInterval.h
+++ b/llvm/include/llvm/CodeGen/LiveInterval.h
@ -465,6 +465,8 @@ namespace llvm {
    /// 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());
    }