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Conference turris::c_plus_plus

Title:	C++
Notice:	Read 1.* and use keywords (e.g. SHOW KEY/FULL KIT_CXX_VAX_VMS)
Moderator:	DECCXX::AMARTIN

Created:	Fri Nov 06 1987
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3604
Total number of notes:	18242

3457.0. "Compilation Error since CXX540" by AUBER::LORENZO (Philippe LORENZO: EVRY FRANCE TSSC Ultrix) Thu Feb 20 1997 05:26

    Hi,

    The following code compiles fine whith CXX530, but fails using CXX540/550
    Which one is the correct behavior (definitively not a C++ Guru :-) ).


class A {
public:
  void* _i;
  A(const A&);
};

class B : public A {
};

class X {
public:
  X(const A);
};

void f(const B b)
{
  X x(b);  //here is line 19
}


$ cxx -c vlasie.cxx
cxx: Error: vlasie.cxx, line 17: In this declaration, the argument list "(b)" m
a
tches more than one "X::X".
  X x(b);  //here is line 19
-----^

    Did I miss any cxx switch ?

    Thanks for Help,

    Philippe.

T.R	Title	User	Personal Name	Date	Lines
3457.1		DECCXL::OUELLETTE		`Thu Feb 20 1997 15:16`	22
	The compiler looks rather confused. Adding -w0 to your command shows a bit more of how it goes wrong. cxx: Error: cpp3457.cxx, line 17: In this declaration, the argument list "(b)" matches more than one "X::X". X x(b); // trouble here -----^ cxx: Info: cpp3457.cxx, line 17: In this declaration, tried to match "X::X" with the type "function (const A) returning reference to X" declared at line number 12 in file cpp3457.cxx. X x(b); // trouble here -----^ cxx: Info: cpp3457.cxx, line 17: In this declaration, tried to match "X::X" with the type "function (reference to const X) returning reference to X" declared at line number 10 in file cpp3457.cxx. X x(b); // trouble here -----^ The frontend for the DEC C++ V6.0 has no trouble with this case though. I'll log the bug so that it can be tracked. So that we can figure out if it needs to be fixed before V6.0, would you please tell us how much grief this causes you?
3457.2		DECCXL::OUELLETTE		`Thu Feb 20 1997 15:24`	1
	For your reference, this is CXXC Bug number 4147.
3457.3		SPECXN::DERAMO	Dan D'Eramo	`Thu Feb 20 1997 16:30`	3
	Is this the same problem as in 3455 here? Dan
3457.4		DECCXL::OUELLETTE		`Thu Feb 20 1997 16:56`	1
	No, this one is still broken in the current compiler.
3457.5	Fix needed before next Release	AUBER::LORENZO	Philippe LORENZO: EVRY FRANCE TSSC Ultrix	`Fri Feb 21 1997 10:19`	19
	Hi, Thanks for your reply, I called back my customer, and he told me that a fix for this release would be welcome. They deliver a Class librairies on different Unix with the same API (function signatures) and source (ILOG company). They are near a release and can't modify the code and documentation. So, any fix is welcome. Can you tell me when Cxx 6.0 will be available? Thanks, Philippe
3457.6	more info needed	DECCXX::MITCHELL		`Fri Feb 21 1997 15:13`	9
	Actually V5.6 is the next release, not V6.0. Does this affect their customers also? That is, assume we gave them a fix, would their customers need the fix also. It sounds like this might be the case since they deliver class libraries. Could you be more specific about their release plans?
3457.7	More infos now available.	AUBER::LORENZO	Philippe LORENZO: EVRY FRANCE TSSC Ultrix	`Fri Feb 28 1997 03:53`	13
	Hello, I asked them for more specific informations and they told me that they will not need a fix for their customers (though they deliver class libraries, they told me that they have a Workaround). Their next release is planned for April the 15th. So if V5.6 is available before this they don't need a fix. If not, they need it. Thanks again for your help, Philippe.
3457.8	status	DECCXX::MITCHELL		`Mon Mar 03 1997 09:51`	11
	Thanks for the additional information. To summarize my understanding of this: - The ISV needs a workaround or a fix for this problem before their next release, which is scheduled for 15-Apr. - Customers of this ISV do not need to have a compiler that fixes the problem. We'll take a closer look at the problem.
3457.9	fixed	DECCXL::ZEEB	Jeff Zeeb	`Tue May 27 1997 11:38`	4
	This problem has been fixed, and is expected to appear in the V5.6 release. Jeff
3457.10		CXXC::WOLFE		`Wed May 28 1997 11:01`	1
	fixed by v6.0