diff options
| author | Chris Lattner <sabre@nondot.org> | 2004-12-04 01:22:09 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-12-04 01:22:09 +0000 |
| commit | ead1b3f0bb70cd9c1ba7a853a79070cb47db9344 (patch) | |
| tree | 441068dacf6fdf88153564a212e96dda9422cdf3 /lib/CodeGen/LiveInterval.cpp | |
| parent | 43ee293abe6843ff5bcf1f0e15f314b3c2fbf8e0 (diff) | |
Prevent accessing past the end of the intervals vector, this fixes
Prolang-C/bison in the JIT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18477 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveInterval.cpp')
| -rw-r--r-- | lib/CodeGen/LiveInterval.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp index 54e460f7b4..a8bc1615b4 100644 --- a/lib/CodeGen/LiveInterval.cpp +++ b/lib/CodeGen/LiveInterval.cpp @@ -74,7 +74,9 @@ bool LiveInterval::overlapsFrom(const LiveInterval& other, i = std::upper_bound(i, ie, j->start); if (i != ranges.begin()) --i; } else if (j->start < i->start) { - if ((++StartPos)->start <= i->start) { + ++StartPos; + if (StartPos != other.end() && StartPos->start <= i->start) { + assert(StartPos < other.end() && i < end()); j = std::upper_bound(j, je, i->start); if (j != other.ranges.begin()) --j; } |