public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
* Re: c++/3194: to many calls to copy ctor
@ 2002-04-26 3:52 nathan
0 siblings, 0 replies; 2+ messages in thread
From: nathan @ 2002-04-26 3:52 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, pere
Synopsis: to many calls to copy ctor
State-Changed-From-To: open->closed
State-Changed-By: nathan
State-Changed-When: Fri Apr 26 03:52:40 2002
State-Changed-Why:
appears fixed
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3194
^ permalink raw reply [flat|nested] 2+ messages in thread
* c++/3194: to many calls to copy ctor
@ 2001-06-15 5:56 pere
0 siblings, 0 replies; 2+ messages in thread
From: pere @ 2001-06-15 5:56 UTC (permalink / raw)
To: gcc-gnats
>Number: 3194
>Category: c++
>Synopsis: to many calls to copy ctor
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: pessimizes-code
>Submitter-Id: net
>Arrival-Date: Fri Jun 15 05:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Petter Reinholdtsen
>Release: gcc 2.95.2 and 3.0 2001-06-15
>Organization:
>Environment:
Debian 2.2
>Description:
Given the following test program, gcc 2.95.2 behaves very different
with and without an explicit copy constructor.
Without With
------------------------------------------------
ctor default 0xbffff628 ctor default 0xbffff628
foo ctor 1 dtor 0 foo ctor 1 dtor 0
dtor default 0xbffff604 dtor default 0xbffff628
dtor default 0xbffff628 ctor temp 0xbffff628
ctor temp 0xbffff624 foo ctor 2 dtor 1
foo ctor 2 dtor 2 dtor temp 0xbffff628
dtor temp 0xbffff604 ctor live 0xbffff628
dtor temp 0xbffff624 cctor live 0xbffff624
ctor live 0xbffff620 foo ctor 4 dtor 2
foo ctor 3 dtor 4 dtor live 0xbffff624
dtor live 0xbffff604 dtor live 0xbffff628
dtor live 0xbffff61c
dtor live 0xbffff620
Notice how the default copy constructor is called even if it isn't
needed.
>How-To-Repeat:
Compile and run the enclosed test program.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/x-c++src; name="defaultparm.cpp"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="defaultparm.cpp"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^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2002-04-26 10:52 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-04-26 3:52 c++/3194: to many calls to copy ctor nathan
-- strict thread matches above, loose matches on Subject: below --
2001-06-15 5:56 pere
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).