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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Unexec dumping results in "Segmentation fault" on Windows Msys2
Date: Thu, 15 Apr 2021 19:12:30 +0300
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To: Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com>
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 Nikolay Kudryavtsev on Thu, 15 Apr 2021 18:47:31 +0300)
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> From: Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com>
> Cc: emacs-devel@gnu.org
> Date: Thu, 15 Apr 2021 18:47:31 +0300
> 
> Emacs configure logs using binutils 2.35 and 2.36 both have --enable-lto 
> and nothing in them seems to be any different between each other...

What does config.log say about link-time-optimizations?  If it enables
them, I suggest to try configuring with --disable-link-time-optimization.