https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107752
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2022-11-18
Status|UNCONFIRMED |NEW
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Li Shaohua from comment #3)
> (In reply to Andrew Pinski from comment #1)
> > Do you mean the column information rather than offset?
>
> Yes, I meant the column information.
>
> I don’t know the implementation details of ASAN. But as UBsan can include
> the column information, I presume it’s also doable in ASAN?
UBSAN column information is passed directly from the compiler to the library
while ASAN (inside GCC) uses libbacktrace to find the full backtrace.
CLang/LLVM does not use libbacktrace do the backtrace, they have their own
library to do it and that provides which is why it is there for them.
I looked into libbacktrace somewhat to see what needs to be done but it seems
to be a lot (though I could be wrong).
