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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Thu, 18 Nov 2021 09:44:16 +0000
Message-ID: <CAH6eHdTuyemzhWkKzkPvs2s_4M=K10bgkvJYeDzOAvvhO4u8Fg@mail.gmail.com>
Subject: Re: putting __glibcxx_assert_fail into debug.cc bloats binary size by
 introducing all the dead code with debug.cc
To: unlvsur unlvsur <unlvsur@live.com>
Cc: "unlvsur unlvsur via Libstdc++" <libstdc++@gcc.gnu.org>
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On Thu, 18 Nov 2021 at 09:12, unlvsur unlvsur wrote:
> -O3. Removal of unused functions require additional non-standard often-unused compiler (-fdata-sections -ffunction-sections -Os) and linker (-Wl,--gc-sections) optimization flags.

I asked why one of those flags doesn't help, and all you've done is
quote something that says you need to use those flags. You realise
that's not an answer, right?

Libstdc++ is built with -fdata-sections -ffunction-sections -O2 and
linked with -Wl,--gc-sections

So why doesn't it help?