Re: [Valgrind-users] does Valgrind-3.19.0.GIT support Clang14 dwarf 5?

[ISHIKAWA,chiaki <ish...@yk...>]

Thank you for your clarification.

It certainly seems the inlined function is not handled well, come to 
think of it.

I will look at the video you kindly referred to.

Thank you again.

Chiaki

On 2022/02/16 20:24, Mark Wielaard wrote:
> On Wed, Feb 16, 2022 at 12:46:32PM +0900, ISHIKAWA,chiaki wrote:
>> This is tangent to the original question, but this part:
>>
>>> with split-dwarf (which rnglistx and strx
>> form codes doesn't support yet)
>>
>> valgrind does support bulk of data generated by --split-dwarf (gcc),
>> doesn't it?
> No, it doesn't. valgrind won't read .dwo files/sections at all which
> split-dwarf uses.
>
>> The above refers to "doesn't support"  rnglistx and strx form codes?
> And addrx forms. These are normally only used (by gcc) for split-dwarf
> and involve an extra indirection through an index to reach the value
> of the attribute. These forms are technically valid in non-split-dwarf
> (with DWARF5) but not supported by valgrind.
>
>> I am asking this  because I have checked mozilla thunderbird code
>> which is compiled using --split-dwarf of GCC and valgrind reports
>> reasonably sane diagnosis so far.
> valgrind can report valid diagnostics with DWARF debuginfo, but it
> might be less accurate, for example it won't report on inlined
> functions.
>
> I happened to give a talk on that recently:
> https://fosdem.org/2022/schedule/event/valgrind_debuginfo/
> (That talk doesn't cover split-dwarf though)
>
> Cheers,
>
> Mark
>