Beyond debug information: Improving program reconstruction in LLDB using C++ modules

Examensarbete för masterexamen

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Bibliographical item details
Type: Examensarbete för masterexamen
Title: Beyond debug information: Improving program reconstruction in LLDB using C++ modules
Authors: Isemann, Raphael
Abstract: Expression evaluation is a core feature of every modern C++ debugger. Still, no C++ debugger currently features an expression evaluator that consistently supports advanced language features such as meta-programming with templates. The underlying problem is that the debugger can often only partially reconstruct the debugged program from the debug information. This thesis presents a solution to this problem by using C++ modules as an additional source of program information. We developed a prototype based on the LLDB debugger that is loading missing program components from the C++ modules used by the program. With this approach, our prototype is able to reliably reconstruct more components than other widely used C++ debuggers such as GDB, Microsoft Visual Studio Debugger and LLDB itself. However, our prototype was slower than LLDB and could only improve program reconstruction for components which are defined in a C++ module.
Keywords: compilers, debuggers, C++ , LLVM, C++ modules, Clang, LLDB
Issue Date: 2019
Publisher: Chalmers tekniska högskola / Institutionen för data och informationsteknik
Collection:Examensarbeten för masterexamen // Master Theses

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