diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
| commit | 902a7b529820e6a0aa85f98f21afaeb1805a22f8 (patch) | |
| tree | e7da40d2f6ef824f7371860826845870e6e1dcd5 /lib/Analysis/MemoryBuiltins.cpp | |
| parent | 58b69754af0cbff56b1cfce9be9392e4451f6628 (diff) | |
Diffstat (limited to 'lib/Analysis/MemoryBuiltins.cpp')
| -rw-r--r-- | lib/Analysis/MemoryBuiltins.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp index c0cc27b6ec5e..e77d2ff9e44e 100644 --- a/lib/Analysis/MemoryBuiltins.cpp +++ b/lib/Analysis/MemoryBuiltins.cpp @@ -473,6 +473,10 @@ ObjectSizeOffsetVisitor::visitExtractValueInst(ExtractValueInst&) { } SizeOffsetType ObjectSizeOffsetVisitor::visitGEPOperator(GEPOperator &GEP) { + // Ignore self-referencing GEPs, they can occur in unreachable code. + if (&GEP == GEP.getPointerOperand()) + return unknown(); + SizeOffsetType PtrData = compute(GEP.getPointerOperand()); if (!bothKnown(PtrData) || !GEP.hasAllConstantIndices()) return unknown(); |