[LLVMdev] llvm-ld stripping debugging symbols?

[Duncan Sands]

Hi Robin, there is still debug info in a.out.bc, however the reference
to "a" has been replaced with "null" in the debug meta data.  Please open
a bug report about this.

Ciao, Duncan.

> It seems that llvm-ld is stripping debugging symbols even with
> optimizations disabled:
>
>      >  cat main.c
>      int main()
>      {
>          int a = 42;
>          return a;
>      }
>      >  clang -c -g -emit-llvm -o main.bc main.c
>      >  llvm-ld -disable-opt -b=a.out.bc main.bc
>      >  clang -g a.out.bc -o a.out
>
>      >gdb a.out
>      [...]
>      (gdb) break main
>      Breakpoint 1 at 0x40045b: file main.c, line 4.
>      (gdb) run
>      Starting program: a.out
>
>      Breakpoint 1, main () at main.c:4
>      4           int a = 42;
>      (gdb) print a
>      No symbol "a" in current context.
>
> However, if I leave llvm-ld out of the picture, it works:
>
>      >  clang -g main.bc -o a.out
>      >  gdb a.out
>      (gdb) break main
>      Breakpoint 1 at 0x40045b: file main.c, line 4.
>      (gdb) run
>      Starting program: a.out
>
>      Breakpoint 1, main () at main.c:4
>      4           int a = 42;
>      (gdb) print a
>      $1 = 0
>
>
> Am I missing something?
>
> This is with LLVM/clang 2.8 on x86_64 Linux.
>
> Thanks,
>
> Robin
>