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* Re: libstdc++/5801: valarray doesn't work as expected with complex types
@ 2002-03-17 11:39 paolo
0 siblings, 0 replies; 4+ messages in thread
From: paolo @ 2002-03-17 11:39 UTC (permalink / raw)
To: Andre.dos.Anjos, gcc-bugs, gcc-prs, gdr, nobody
Synopsis: valarray doesn't work as expected with complex types
Responsible-Changed-From-To: unassigned->gdr
Responsible-Changed-By: paolo
Responsible-Changed-When: Sun Mar 17 11:39:27 2002
Responsible-Changed-Why:
Valarray maintainer.
State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Sun Mar 17 11:39:27 2002
State-Changed-Why:
Gaby, I'm assigning this to you. I have reproduced the seg
fault on i686-pc-linux-gnu with 3.0.4, 3.1 pre, 3.2 exp,
/not/ with 2.95.3. Therefore, if you can confirm that the
code is indeed legal this is a serious regression.
Ciao, Paolo.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5801
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: libstdc++/5801: valarray doesn't work as expected with complex types
@ 2002-04-08 4:48 gdr
0 siblings, 0 replies; 4+ messages in thread
From: gdr @ 2002-04-08 4:48 UTC (permalink / raw)
To: Andre.dos.Anjos, gcc-bugs, gcc-prs, gdr
Synopsis: valarray doesn't work as expected with complex types
State-Changed-From-To: analyzed->closed
State-Changed-By: gdr
State-Changed-When: Mon Apr 8 04:48:09 2002
State-Changed-Why:
Erronous use. It can't be a regression.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5801
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: libstdc++/5801: valarray doesn't work as expected with complex types
@ 2002-04-08 4:46 Gabriel Dos Reis
0 siblings, 0 replies; 4+ messages in thread
From: Gabriel Dos Reis @ 2002-04-08 4:46 UTC (permalink / raw)
To: gdr; +Cc: gcc-prs
The following reply was made to PR libstdc++/5801; it has been noted by GNATS.
From: Gabriel Dos Reis <gdr@codesourcery.com>
To: Andre.dos.Anjos@cern.ch
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: libstdc++/5801: valarray doesn't work as expected with complex types
Date: 08 Apr 2002 13:45:49 +0200
Andre.dos.Anjos@cern.ch writes:
[...]
| The following code compiles cleanly, but crashes
| ****
| #include <valarray>
|
| typedef std::valarray<int> vint;
|
| int main (void)
| {
| vint sample(3, 10); //a sample
OK.
| std::valarray<vint> x(sample,4); //four of the sample
This is not OK (but I made it work): std::valarray<T> works only with
some restrictions on T. T must be "friendly", that is there should be
no semantic difference between
T u(t);
and
T u;
u = t;
assuming t is of type T.
a std::valarray<T> does not obey the abbove rule so you can't say
std::valarray<std::valarray<T> > and expect a reasonable behaviour.
| std::valarray<bool> mask(true, x.size());
| mask[1] = false;
| std::valarray<vint> y(x[mask]); ///< crashes
This is not permitted -- and I didn't have a time to make it work.
-- Gaby
^ permalink raw reply [flat|nested] 4+ messages in thread
* libstdc++/5801: valarray doesn't work as expected with complex types
@ 2002-03-01 5:46 Andre.dos.Anjos
0 siblings, 0 replies; 4+ messages in thread
From: Andre.dos.Anjos @ 2002-03-01 5:46 UTC (permalink / raw)
To: gcc-gnats
>Number: 5801
>Category: libstdc++
>Synopsis: valarray doesn't work as expected with complex types
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Mar 01 05:46:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Andre.dos.Anjos@cern.ch
>Release: gcc version 3.1 20020205 (Red Hat Linux Rawhide 3.1-0.21)
>Organization:
>Environment:
Linux pcatd37 2.4.9-21.1.cernsmp #1 SMP Thu Jan 24 23:17:49 CET 2002 i686 unknow
Running RedHat Linux 7.2 with new compiler version from RawHide
>Description:
The following code compiles cleanly, but crashes
****
#include <valarray>
typedef std::valarray<int> vint;
int main (void)
{
vint sample(3, 10); //a sample
std::valarray<vint> x(sample,4); //four of the sample
std::valarray<bool> mask(true, x.size());
mask[1] = false;
std::valarray<vint> y(x[mask]); ///< crashes
return 0;
}
>How-To-Repeat:
compile the code given on description with
g++ -save-temps x.cc -o x
and then try to run it.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2002-04-08 11:48 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2002-03-17 11:39 libstdc++/5801: valarray doesn't work as expected with complex types paolo
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2002-04-08 4:48 gdr
2002-04-08 4:46 Gabriel Dos Reis
2002-03-01 5:46 Andre.dos.Anjos
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