public inbox for gcc-prs@sourceware.org help / color / mirror / Atom feed
From: Nigel Stewart <nigels@nigels.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c++/1833 Date: Fri, 04 Apr 2003 03:06:00 -0000 [thread overview] Message-ID: <20030404030601.11695.qmail@sources.redhat.com> (raw) The following reply was made to PR c++/1833; it has been noted by GNATS. From: Nigel Stewart <nigels@nigels.com> To: Wolfgang Bangerth <bangerth@ices.utexas.edu> Cc: gcc-gnats@gcc.gnu.org Subject: Re: c++/1833 Date: Fri, 04 Apr 2003 12:58:54 +1000 Wolfgang, Heeding your advice about aliasing rules, I've replaced the cast with a union. Problem is solved. However, I would suggest that gcc should provide warnings or errors in the case of being fed illegal code. float foo() { assert(sizeof(unsigned int)==sizeof(float)); union { float f; unsigned int i; } tmp; tmp.i = (127<<23) | (1<<22); return tmp.f; } Thanks for your response, and my apologies for cluttering the bug database... N Stewart > Nigel, > the problem you sent has nothing to do with the problem described in PR > 1833. You are violating aliasing rules. The code in the report is legal, > yours is not. > > W.
next reply other threads:[~2003-04-04 3:06 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-04-04 3:06 Nigel Stewart [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-05-09 7:16 c++/1833 Gabriel Dos Reis 2003-05-08 23:46 c++/1833 Wolfgang Bangerth 2003-04-03 17:36 c++/1833 Wolfgang Bangerth 2001-04-01 0:00 c++/1833 aoliva
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20030404030601.11695.qmail@sources.redhat.com \ --to=nigels@nigels.com \ --cc=gcc-prs@gcc.gnu.org \ --cc=nobody@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).