[LLVMbugs] [Bug 12066] New: Crash in getPrevNode() for iplist<Instruction>

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12066

             Bug #: 12066
           Summary: Crash in getPrevNode() for iplist<Instruction>
           Product: libraries
           Version: 3.0
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Core LLVM classes
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: anton at d-inter.ru
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Trying to call getPrevNode() for the first element in iplist<Instruction>
results in exception. Try following code:

iplist<llvm::Instruction> l;
Instruction *elem = llvm::ReturnInst::Create(getGlobalContext());
l.push_back(elem);
Instruction *prev = l.begin()->getPrevNode();

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