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* Re: c++/6427: compiler generates incorrect call to compiler generated copy ctor
@ 2002-04-25 7:27 nathan
0 siblings, 0 replies; 2+ messages in thread
From: nathan @ 2002-04-25 7:27 UTC (permalink / raw)
To: ben.dorman, gcc-bugs, gcc-prs, nobody
Synopsis: compiler generates incorrect call to compiler generated copy ctor
State-Changed-From-To: open->closed
State-Changed-By: nathan
State-Changed-When: Thu Apr 25 07:27:48 2002
State-Changed-Why:
not a bug. There is an invokation of the copy ctor
to copy the temporary object into the (compiler's) throw
structure. See [15.1]
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6427
^ permalink raw reply [flat|nested] 2+ messages in thread
* c++/6427: compiler generates incorrect call to compiler generated copy ctor
@ 2002-04-23 9:06 ben.dorman
0 siblings, 0 replies; 2+ messages in thread
From: ben.dorman @ 2002-04-23 9:06 UTC (permalink / raw)
To: gcc-gnats
>Number: 6427
>Category: c++
>Synopsis: compiler generates incorrect call to compiler generated copy ctor
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Tue Apr 23 09:06:02 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Ben Dorman
>Release: 3.0.3
>Organization:
>Environment:
gnu-linux-i686 kernel 2.4.2-2
>Description:
[Report submitted earlier through gcc bug which generated
incorrect e-mail address. ]
Following function generates the error:
void FITS::open (RWmode mode)
{
int status=0;
status = ffopen(&m_FITSImpl->fptr(), m_FITSImpl->name().c_str(), mode, &status);
const std::string diag (m_FITSImpl->name());
bool silent = s_verboseMode;
if (status != 0)
{
if (status == 104) throw CantOpen(diag,silent);
else throw FitsError(status);
}
}
CantOpen is declared as follows, with explicit keyword
added to demonstrate problem (removing copy ctor declaration
restores compilation but apparently does not change the problem,
according to ddd traces).
# 677 "FITS.h"
class CantOpen : public FitsException
{
public:
CantOpen (const string& diag, bool silent = false);
explicit CantOpen(const CantOpen&);
protected:
private:
private:
};
Compilation of FITS.cxx yields:
c++ -DHAVE_CONFIG_H -I. -I. -I. -I./.. -I/home/dorman/cpp/include -g -v -save-temps -Wall -c FITS.cxx
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/specs
Configured with: ../gcc-3.0.3/configure --enable-threads --prefix=/usr
Thread model: posix
gcc version 3.0.3
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/cpp0 -lang-c++ -D__GNUG__=3 -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -v -I. -I. -I. -I./.. -I/home/dorman/cpp/include -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=3 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -Wall -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ -DHAVE_CONFIG_H FITS.cxx FITS.ii
GNU CPP version 3.0.3 (cpplib) (i386 Linux/ELF)
ignoring nonexistent directory "/usr/i686-pc-linux-gnu/include"
ignoring duplicate directory "."
ignoring duplicate directory "."
#include "..." search starts here:
#include <...> search starts here:
.
..
/home/dorman/cpp/include
/usr/include/g++-v3
/usr/include/g++-v3/i686-pc-linux-gnu
/usr/include/g++-v3/backward
/usr/local/include
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/include
/usr/include
End of search list.
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/cc1plus -fpreprocessed FITS.ii -quiet -dumpbase FITS.cxx -g -Wall -version -o FITS.s
GNU CPP version 3.0.3 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.0.3 (i686-pc-linux-gnu)
compiled by GNU C version 3.0.3.
FITS.cxx: In member function `void CCfits::FITS::open(CCfits::RWmode)':
FITS.cxx:544: no matching function for call to
`CCfits::FITS::CantOpen::CantOpen(CCfits::FITS::CantOpen)'
FITS.cxx:104: candidates are: CCfits::FITS::CantOpen::CantOpen(const
std::string&, bool = false)
make: *** [FITS.o] Error 1
Where the custom ctor should clearly be called.
>How-To-Repeat:
see above
>Fix:
compilation is restored by removing copy ctor declaration,
but problem is still present and causes unexpected results
in exception handling.
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="FITS.ii"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="FITS.ii"
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-04-25 7:27 c++/6427: compiler generates incorrect call to compiler generated copy ctor nathan
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2002-04-23 9:06 ben.dorman
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