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2018 Aug 23
2
How does LLDB locate the DWARF information stored inside MACH-O .o files produced by LLVM and LLD?
When I make a simple test program and call abort() and use LLDB to debug it, it has address-to-line mapping. If I then delete the .o file and run LLDB again, it loses the address-to-line mapping. So there must be DWARF info, or otherwise address-to-line info in the .o file. I'm parsing the MACH-O executable, which has a LC_SYMTAB entry, and one of the entries is the file path of the .o file.