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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Mon, 05 Feb 2018 20:12:00 -0000
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Subject: Re: gdb 8.x - g++ 7.x compatibility
To: Roman Popov <ripopov@gmail.com>
Cc: Simon Marchi <simon.marchi@polymtl.ca>, Martin Sebor <msebor@gmail.com>, 	Manfred <mx2927@gmail.com>, gdb@sourceware.org, "gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
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On 5 February 2018 at 20:10, Roman Popov wrote:
> Do you mean that g++ guarantees uniqueness of mangled names for types? And

Of course. The mangled name is determined by the ABI and must be
stable, predictable and unique, so that linking works.

> uses name compare for operator==  ?

Yes.