tatyana-krasnukha added a comment. There is the function GetDisasmToUse in InstructionLLVMC class that can return nullptr. But this case is not handled in any usage. I suppose that caller functions cannot be invoked if !DisassemblerLLVMC::IsValid(). But it still looks dangerous for me. May be GetDisasmToUse should assert if neither m_disasm_up nor m_alternate_disasm_up exists? And may return a reference then.
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