public inbox for gcc-prs@sourceware.org help / color / mirror / Atom feed
From: bangerth@dealii.org To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, jfischer_5809@yahoo.com, nobody@gcc.gnu.org Subject: Re: c++/10033: [3.2 regression] optimization breaks polymorphic references w/ 'typeid' operator Date: Wed, 12 Mar 2003 14:24:00 -0000 [thread overview] Message-ID: <20030312142417.18071.qmail@sources.redhat.com> (raw) Old Synopsis: optimization breaks polymorphic references w/ 'typeid' operator New Synopsis: [3.2 regression] optimization breaks polymorphic references w/ 'typeid' operator State-Changed-From-To: open->analyzed State-Changed-By: bangerth State-Changed-When: Wed Mar 12 14:24:17 2003 State-Changed-Why: Confirmed. Here's a smaller testcase: --------------------- #include <cstdlib> #include <typeinfo> struct A { virtual ~A() { } }; struct B : public A { }; int main() { B bobj; A& aref = bobj; if (typeid(aref) != typeid(B)) abort(); return 0; } -------------------------------- It executes just fine with 3.0, 3.3 and 3.4, but aborts with 3.2 when given -O2. So it's a regression of 3.2 only. W. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10033
next reply other threads:[~2003-03-12 14:24 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-03-12 14:24 bangerth [this message] 2003-04-25 19:53 jbuck
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=20030312142417.18071.qmail@sources.redhat.com \ --to=bangerth@dealii.org \ --cc=gcc-bugs@gcc.gnu.org \ --cc=gcc-gnats@gcc.gnu.org \ --cc=gcc-prs@gcc.gnu.org \ --cc=jfischer_5809@yahoo.com \ --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).