[llvm-dev] How to handle DWARF Missing due to function elimination?

[David Blaikie via llvm-dev]

Yeah - would be good to know what the examples are - generally that is not
expected (even with linker GC or other cases of symbol removal) & so is
most likely something to be fixed in LLVM - but yeah, if the debugger is
actually /crashing/ that's also not good, and it shouldn't do that (but
lesser problem, because it also shouldn't encounter debug info like this,
generally).

On Thu, May 27, 2021 at 4:47 AM Jeremy Morse <jeremy.morse.llvm at gmail.com>
wrote:

> Hi Chuanqi,
>
> On Thu, May 27, 2021 at 12:11 PM chuanqi.xcq
> <yedeng.yd at linux.alibaba.com> wrote:
> > The gdb would blame when it finds 0x0123456 doesn't refer to any
> functions in dwarf format.
>
> This is really interesting -- if you run "llvm-dwarfdump -verify" on
> the output file, does it too complain about an invalid DIE reference?
>
> There's a known issue with very complicated LTO builds that causes
> something similar:
>
>   https://bugs.llvm.org/show_bug.cgi?id=48790
>
> Reverting 93592b726c7 locally will tell you whether it's that or not.
>
> --
> Thanks,
> Jeremy
>
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