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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99637] bit_cast doesn't work with padding bits and it should
Date: Wed, 17 Mar 2021 21:23:12 +0000	[thread overview]
Message-ID: <bug-99637-4-EqVkftpVLI@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-99637-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99637

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think the relevant sentence is "Each bit of the value representation of the
result is equal to the corresponding bit in the object representation of from."

For one of the bits in the result, there is no corresponding bit in the object
representation of from. So the result cannot be created.

  parent reply	other threads:[~2021-03-17 21:23 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-17 20:46 [Bug c++/99637] New: " hanicka at hanicka dot net
2021-03-17 20:58 ` [Bug c++/99637] " jakub at gcc dot gnu.org
2021-03-17 21:19 ` hanicka at hanicka dot net
2021-03-17 21:22 ` jakub at gcc dot gnu.org
2021-03-17 21:23 ` redi at gcc dot gnu.org [this message]
2021-03-18  9:12 ` redi at gcc dot gnu.org
2021-03-18  9:19 ` jakub at gcc dot gnu.org
2021-03-18 10:35 ` redi at gcc dot gnu.org
2023-04-26  7:51 ` m.cencora at gmail dot com

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