[libcxx-commits] [PATCH] D122530: [demangler] Support C23 _BitInt type

Mon Mar 28 07:58:57 PDT 2022

zsrkmyn marked an inline comment as done.
zsrkmyn added a comment.

In D122530#3411466 <https://reviews.llvm.org/D122530#3411466>, @erichkeane wrote:

> In D122530#3411449 <https://reviews.llvm.org/D122530#3411449>, @zsrkmyn wrote:
>
>> In D122530#3411232 <https://reviews.llvm.org/D122530#3411232>, @erichkeane wrote:
>>
>>> I wonder if there is value, for backwards compatibility to ALSO parse the old `_ExtInt` mangling?
>>
>> @erichkeane, I'm not sure what `_ExtInt` was mangled to in the past, but it now is also mangled as `DB`/`DU` using the latest clang, so it's enough to demangle `DB` and `DU` IMO.
>
> I went to look it up, we used to mangle it as a 'struct', so it demangled anyway (so `_ExtInt13` was : `U7_ExtIntILi13`, so `void foo(_ExtInt(13))` was `_Z3fooU7_ExtIntILi13EEi`.

Thanks for explaination! So we don't need to make changes, right?

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https://reviews.llvm.org/D122530