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Fix crasher when N->getElement(n) is NULL 

llvm-svn: 90572
This commit is contained in:
Victor Hernandez 2009-12-04 18:29:23 +00:00
parent 19462d681a
commit a6bd3f5f5e
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/VMCore/AsmWriter.cpp
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@ -698,7 +698,7 @@ void SlotTracker::processFunction() {
if (MDNode *N = dyn_cast_or_null<MDNode>(I->getOperand(i))) {
// Create a metadata slot only if N contains no instructions.
for (unsigned n = 0, e = N->getNumElements(); n != e; ++n)
if (isa<Instruction>(N->getElement(n)))
if (N->getElement(n) && isa<Instruction>(N->getElement(n)))
continue;
CreateMetadataSlot(N);
}