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| author | Chandler Carruth <chandlerc@gmail.com> | 2012-10-09 01:58:35 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2012-10-09 01:58:35 +0000 |
| commit | 2fdb25b5a9c096f38bbd3f622c34ff9b2744e56d (patch) | |
| tree | 84d2bdb36932ce7268181066797ef9a45781d308 /lib/Transforms/Scalar/SROA.cpp | |
| parent | 03753aa7598a0c313846fd49fc7eaf75c2d9f003 (diff) | |
| download | llvm-2fdb25b5a9c096f38bbd3f622c34ff9b2744e56d.tar.gz llvm-2fdb25b5a9c096f38bbd3f622c34ff9b2744e56d.tar.bz2 llvm-2fdb25b5a9c096f38bbd3f622c34ff9b2744e56d.tar.xz | |
Fix PR14034, an infloop / heap corruption / crash bug in the new SROA.
Thanks to Benjamin for the raw test case. This one took about 50 times
longer to reduce than to fix. =/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165476 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/SROA.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/SROA.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/SROA.cpp b/lib/Transforms/Scalar/SROA.cpp index b2793893b4..ca76251492 100644 --- a/lib/Transforms/Scalar/SROA.cpp +++ b/lib/Transforms/Scalar/SROA.cpp @@ -1786,6 +1786,8 @@ static Value *getNaturalGEPWithType(IRBuilder<> &IRB, const DataLayout &TD, ElementTy = SeqTy->getElementType(); Indices.push_back(IRB.getInt(APInt(TD.getPointerSizeInBits(), 0))); } else if (StructType *STy = dyn_cast<StructType>(ElementTy)) { + if (STy->element_begin() == STy->element_end()) + break; // Nothing left to descend into. ElementTy = *STy->element_begin(); Indices.push_back(IRB.getInt32(0)); } else { |