Linking with debug version LLVM library crashes, linking with release version LLVM library fine

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Hi,

I am playing with this simple example https://github.com/eliben/llvm-clang-samples/blob/master/src_llvm/simple_module_pass.cpp.

I added a LoopInfo pass dependency:

// Create a pass manager and fill it with the passes we want to run.
legacy::PassManager PM;
PM.add(new LoopInfoWrapperPass());
PM.add(new GVNames());
PM.run(*Mod);

When linking against the release version of LLVM library, it compiles, links, and runs fine.

But when linking against the debug version of LLVM library, it crashes on PM.add(new LoopInfoWrapperPass());

I am pretty sure I might be doing something stupid, but cannot see the problem.