From: Jonathan Wakely <jwakely.gcc@gmail.com>
To: Varun Kumar E <varunkumare99@gmail.com>
Cc: "libstdc++" <libstdc++@gcc.gnu.org>
Subject: Re: RTTI names for classes in anonymous namespaces.
Date: Wed, 23 Aug 2023 09:48:48 +0100 [thread overview]
Message-ID: <CAH6eHdTHvLvuKeUGHPDN4=oWAaWDa+So5i-MM5OuPvhuUfYMLA@mail.gmail.com> (raw)
In-Reply-To: <CAAJX8EnzTN_V58pR42_7wW9du2Sp4eh_TDj1CbNUD9ZmaTYFiQ@mail.gmail.com>
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On Wed, 23 Aug 2023, 09:19 Varun Kumar E via Libstdc++, <
libstdc++@gcc.gnu.org> wrote:
> hello all,
>
> The RTTI names generated by gcc for classes in anonymous namespaces
> begin with the prefix asterisk(*).
Could you please explain the reasoning behind this?
It means that type_info equality can be determined by just comparing the
const char* pointers, instead of using strcmp to match equal names.
The pointer value will be unique, so will only compare equal to itself.
As Itanium ABI
> c++ has no mention of this.
>
The Itanium ABI doesn't dictate the form of those strings.
When you call std::type_info::name() the '*' is not in the result. It's
just an implementation detail.
next prev parent reply other threads:[~2023-08-23 8:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-23 8:19 Varun Kumar E
2023-08-23 8:48 ` Jonathan Wakely [this message]
2023-08-23 8:40 Varun Kumar E
2023-08-23 8:54 ` Jonathan Wakely
2023-08-23 8:59 ` Jonathan Wakely
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