Displaying 2 results from an estimated 2 matches for "ifsinstrarray".
2013 Jan 08
1
[LLVMdev] LLVM seg fault : dereference an uninitialized pointer Instruction*
Hello everyone,
I encounter a segfault problem in my LLVM function pass. I think the
problem is that I dereference an uninitialized pointer from an array of
Instruction* elements which results in undefined behavior. The array is :
Instruction** ifsInstrArray = new Instruction*[100];
The problem appears only sometimes (during runOnFunction && visiting
BasicBlocks and Instructions). Sometimes means, for e.g. :
errs()<<*ifsInstrArray[0]<<"\n"<<*ifsInstrArray[1];
only for *ifsInstrArray[1] the segfault appears. I alre...
2012 Dec 21
0
[LLVMdev] llvm segfault Instruction::getOpcode
...rnDC : public FunctionPass`
" but I also have
class ifChecker {
public:
virtual bool operEquiv(Instruction *I1, Instruction *I2);
};
I have in
bool patternDC::runOnFunction(Function &F) {
...
ifChecker* CC=new ifChecker();
if ( CC->operEquiv(ifsInstrArray[i], ifsInstrArray[j]) )
...
and
bool ifChecker::operEquiv(Instruction *I1, Instruction *I2){
if (I1!=NULL && I2!=NULL)
//if (I1->getOpcode() != I2->getOpcode()) return false;
return true;
}
When I decomment the line from operEquiv, I have the...