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On Thu, May 28, 2015 at 4:36 PM, Alex <alexinbeijing at gmail.com> wrote: > Dear LLVM devs, > > I've noticed that LLVM's assembler (and hence clang) doesn't generate > debug data when assembling, even when run with "-g". > Sorry, let me correct that: the assembler does generate the .debug_info section (as well as line number data) when run with

Dear LLVM devs, I've noticed that LLVM's assembler (and hence clang) doesn't generate debug data when assembling, even when run with "-g". Users can add their own CFI/line number data with assembler directives. But GDB ignores the line number data if you don't have a DIE in the .debug_info section which identifies the compilation unit. (I'm not an expert on GDB, but