[LLVMdev] 'opt' Aborted "While deleting: void %"

[Duncan Sands]

Hi Griffin, did your pass create a data structure that holds values somehow,
and forgot to delete it?  Also, try running under valgrind in case this is
due to a memory error of some kind.

Ciao, Duncan.

> So I have an LLVM pass that appears to run completely and work fine, and
> then it aborts at the very end.  When exiting the final runOnFunction call,
> I get the following error / stack dump.  I cannot figure out why this is
> happening for the life of me - does anyone have any ideas?  I'm not trying
> to do any crazy deallocation or anything, it just seems like a normal pass
> to me.
>
> Thanks,
> Griffin Wright
>
> While deleting: void %
> An asserting value handle still pointed to this value!
> UNREACHABLE executed at /x/grwright/llvm/llvm-2.9/lib/VMCore/Value.cpp:569!
> 0  libLLVM-2.9.so 0xf6ef856b
> 1  libLLVM-2.9.so 0xf6ef82f8
> 2                 0xf7782400 __kernel_sigreturn + 0
> 3  libc.so.6      0xf57d4d52 abort + 386
> 4  libLLVM-2.9.so 0xf6ee40d4 llvm::SmallVector<char, 64u>::~SmallVector() +
> 0
> 5  libLLVM-2.9.so 0xf6a5ce2e
> llvm::ValueHandleBase::ValueIsDeleted(llvm::Value*) + 662
> 6  libLLVM-2.9.so 0xf6a5b1ec llvm::Value::~Value() + 58
> 7  libLLVM-2.9.so 0xf66ee041 llvm::User::~User() + 93
> 8  libLLVM-2.9.so 0xf6a00d89 llvm::Instruction::~Instruction() + 121
> 9  libLLVM-2.9.so 0xf6a0351f llvm::CallInst::~CallInst() + 57
> 10 libLLVM-2.9.so 0xf68d9671
> llvm::ilist_node_traits<llvm::Instruction>::deleteNode(llvm::Instruction*)
> + 30
> 11 libLLVM-2.9.so 0xf68d8c80 llvm::iplist<llvm::Instruction,
> llvm::ilist_traits<llvm::Instruction>
>> ::erase(llvm::ilist_iterator<llvm::Instruction>) + 48
> 12 libLLVM-2.9.so 0xf696ac37 llvm::iplist<llvm::Instruction,
> llvm::ilist_traits<llvm::Instruction>
>> ::erase(llvm::ilist_iterator<llvm::Instruction>,
> llvm::ilist_iterator<llvm::Instruction>) + 49
> 13 libLLVM-2.9.so 0xf696a7a0 llvm::iplist<llvm::Instruction,
> llvm::ilist_traits<llvm::Instruction>  >::clear() + 102
> 14 libLLVM-2.9.so 0xf6969420 llvm::BasicBlock::~BasicBlock() + 314
> 15 libLLVM-2.9.so 0xf696adb2
> llvm::ilist_node_traits<llvm::BasicBlock>::deleteNode(llvm::BasicBlock*) +
> 30
> 16 libLLVM-2.9.so 0xf696a9a8 llvm::iplist<llvm::BasicBlock,
> llvm::ilist_traits<llvm::BasicBlock>
>> ::erase(llvm::ilist_iterator<llvm::BasicBlock>) + 48
> 17 libLLVM-2.9.so 0xf696958f llvm::BasicBlock::eraseFromParent() + 77
> 18 libLLVM-2.9.so 0xf69b7b11 llvm::Function::dropAllReferences() + 159
> 19 libLLVM-2.9.so 0xf6a2dc59 llvm::Module::dropAllReferences() + 81
> 20 libLLVM-2.9.so 0xf6a2caf2 llvm::Module::~Module() + 50
> 21 opt            0x08081e36 std::auto_ptr<llvm::Module>::~auto_ptr() + 36
> 22 opt            0x0807d5a4 main + 5045
> 23 libc.so.6      0xf57bdbd6 __libc_start_main + 230
> 24 opt            0x0806de41
> Stack dump:
> 0.	Program arguments: opt -debug -load
> /x/grwright/llvm/llvm-sfi/RelRecovery/Debug+Asserts/lib/relRecovery.so
> -profile-loader -profile-info-file=164.gzip/llvmprof.out -relRecovery
> -rr-analysis-only -rr-use-exec-prof=true -rr-bench=164.gzip
> 164.gzip/164.gzip.link.bc -o 164.gzip/164.gzip.rel.bc
> Aborted
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev