diff options
author | Chris Lattner <sabre@nondot.org> | 2005-10-20 22:50:10 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2005-10-20 22:50:10 +0000 |
commit | cef6010c64bc56fa2a8f1e7e9e28b8821adeceac (patch) | |
tree | dbdbd47dd30e996c66cf5e7b7dc937c02f0479d0 /lib/CodeGen/LiveInterval.cpp | |
parent | 964b6aacb465f6d95de09d64e40623ae4c57e07e (diff) |
Fix a conditional so we don't access past the end of the range. Thanks to
Andrew for bringing this to my attn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23850 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveInterval.cpp')
-rw-r--r-- | lib/CodeGen/LiveInterval.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp index 50d8a25936..a7f1eb357e 100644 --- a/lib/CodeGen/LiveInterval.cpp +++ b/lib/CodeGen/LiveInterval.cpp @@ -218,12 +218,10 @@ void LiveInterval::extendIntervalEndTo(Ranges::iterator I, unsigned NewEnd) { // If the newly formed range now touches the range after it and if they have // the same value number, merge the two ranges into one range. - if (I != ranges.end()) { - Ranges::iterator Next = next(I); - if (Next->start == I->end && Next->ValId == ValId) { - I->end = Next->end; - ranges.erase(Next); - } + Ranges::iterator Next = next(I); + if (Next != ranges.end() && Next->start == I->end && Next->ValId == ValId) { + I->end = Next->end; + ranges.erase(Next); } } |