[LLVMdev] Runtime exception in DominatorTree.getRootNode()

[Bill He]

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
  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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