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From: bangerth@dealii.org To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, germain@cs.utah.edu, nobody@gcc.gnu.org Subject: Re: c++/8417: g++ 3.2 generating different (and incorrect?) code from g++ 2.95.4 Date: Fri, 01 Nov 2002 17:50:00 -0000 [thread overview] Message-ID: <20021102015002.25145.qmail@sources.redhat.com> (raw) Synopsis: g++ 3.2 generating different (and incorrect?) code from g++ 2.95.4 State-Changed-From-To: open->closed State-Changed-By: bangerth State-Changed-When: Fri Nov 1 17:50:01 2002 State-Changed-Why: What you try is calling for trouble: you should not assume anything about where member variables are located relative to "this". Also, "this" may change from sub- to superclass, depending on the layout of vtables, etc. You should only try to zero out data pointed to by "this" if you absolutely know what you do, and stick to the ABI that is relevant to your platform. This said, the ABI gcc uses on Linux has changed between 2.95 and 3.2, so the inconsistent behavior is not surprising. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8417
next reply other threads:[~2002-11-02 1:50 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-11-01 17:50 bangerth [this message] -- strict thread matches above, loose matches on Subject: below -- 2002-11-01 0:46 Giovanni Bajo 2002-10-31 13:36 germain
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