[LLVMdev] Runtime exception in DominatorTree.getRootNode()

[John Criswell]

On 4/11/13 10:30 PM, Bill He wrote:
> Hi all,
>
> I am trying to traverse a dominator tree and have encountered a weird 
> runtime exception:
>
> Here's my simple code:
>
>   virtual bool runOnFunction(Function &F) {
>     DominatorTree& DT = getAnalysis<DominatorTree>();
>
> *    DomTreeNode* rootNode = DT.getRootNode();*
>     return false.
> }
>
> Here's the documentation page:
> http://llvm.org/docs/doxygen/html/classllvm_1_1DominatorTree.html
>
> And here's my runtime exception:
> dyld: lazy symbol binding failed: Symbol not found: 
> __ZN4llvm17DominatorTreeBaseINS_10BasicBlockEE11getRootNodeEv
>   Referenced from: 
> /Users/weibohe/Projects/llvm/llvm/Debug+Asserts/lib/LLVMSLVN.dylib

How are you running your pass?  Based on the error, it looks like 
whatever tool you're using to run your pass doesn't have the library 
defining the DominatorTree code linked in.

-- John T.

>   Expected in: flat namespace
>
> dyld: Symbol not found: 
> __ZN4llvm17DominatorTreeBaseINS_10BasicBlockEE11getRootNodeEv
>   Referenced from: 
> /Users/weibohe/Projects/llvm/llvm/Debug+Asserts/lib/LLVMSLVN.dylib
>   Expected in: flat namespace
>
> 0  opt               0x0000000105f528de 
> llvm::sys::PrintStackTrace(__sFILE*) + 46
> 1  opt               0x0000000105f52beb 
> _ZL28PrintStackTraceSignalHandlerPv + 27
> 2  opt               0x0000000105f52ef9 _ZL13SignalHandleri + 297
> 3  libsystem_c.dylib 0x00007fff90d32cfa _sigtramp + 26
> 4  libsystem_c.dylib 0xfffffffffffffff8 _sigtramp + 1865208600
> 5  libsystem_c.dylib 0x00007fff64a41948 _sigtramp + 3553684584
> 6  libdyld.dylib     0x00007fff8afe2716 dyld_stub_binder_ + 13
> 7  LLVMSLVN.dylib    0x00000001081a8040 void 
> std::__destroy_aux<llvm::PassInfo const**>(llvm::PassInfo const**, 
> llvm::PassInfo const**, std::__true_type) + 19904
> 8  LLVMSLVN.dylib    0x00000001081998c1 (anonymous 
> namespace)::DVN::runOnFunction(llvm::Function&) + 65
> 9  opt               0x0000000105eb27b2 
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 434
> 10 opt               0x0000000105eb2a98 
> llvm::FPPassManager::runOnModule(llvm::Module&) + 104
> 11 opt               0x0000000105eb2e9a 
> llvm::MPPassManager::runOnModule(llvm::Module&) + 634
> 12 opt               0x0000000105eb36ae 
> llvm::PassManagerImpl::run(llvm::Module&) + 302
> 13 opt               0x0000000105eb3951 
> llvm::PassManager::run(llvm::Module&) + 33
> 14 opt               0x0000000104e4d335 main + 6549
> 15 opt               0x0000000104e3e434 start + 52
> Stack dump:
> 0.Program arguments: opt -load 
> ../../../Debug+Asserts/lib/LLVMSLVN.dylib -dvn
> 1.Running pass 'Function Pass Manager' on module '<stdin>'.
> 2.Running pass 'My test analysis' on function '@main'
>
>
> Any idea on why this is happening? Any help or suggestion is 
> appreciated! Thanks in advance.
>
> Best,
> Weibo
>
>
>
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