Regression: gcc-3.x fails to compile virtual inheritance with variable number of argument methode

[Matthias Klose <doko@klose.in-berlin.de>]

>Submitter-Id:	net
>Originator:	"Stephane Magnenat" <nct@ysagoon.com>
>Organization:	The Debian Project
>Confidential:	no
>Synopsis:	
>Severity:	serious
>Priority:	high
>Category:	c++
>Class:		rejects-legal
>Release:	3.1 (Debian) (Debian unstable)
>Environment:
System: Debian GNU/Linux (unstable)
Architecture: i686
	
host: i386-linux
configured with: /mnt/data/gcc-3.1/gcc-3.1-3.1ds2/src/configure -v --enable-languages=c,c++,java,f77,proto,objc,ada --prefix=/usr --mandir=$\(prefix\)/share/man --infodir=$\(prefix\)/share/info --with-gxx-include-dir=$\(prefix\)/include/g++-v3-3.1 --enable-shared --with-system-zlib --enable-long-long --enable-nls --without-included-gettext --enable-clocale=gnu --enable-threads=posix --enable-java-gc=boehm --enable-objc-gc i386-linux
>Description:
[ Reported to the Debian BTS as report #151357.
  Please CC 151357@bugs.debian.org on replies.
  Log of report can be found at http://bugs.debian.org/151357 ]
	

Stephane Magnenat <nct@ysagoon.com> reports:

When I try to compile C++ code with virtual inheritance and variable number of 
argument method, the compilation fails with the following message :

bugreport.cpp:35: generic thunk code fails for method `virtual void
   Virt::p(const char*, ...)' which uses `...'

It is working fine with gcc 2.95.x



#include <stdio.h>
#include <stdarg.h>

class Base
{
public:
	Base() { }
	virtual void p(const char *format, ...)=0;
};

class Der1: public virtual Base
{
public:
	Der1():Base() { }
	virtual void p(const char *format, ...)=0;
};

class Der2: public virtual Base
{
public:
	Der2():Base() { }
	virtual void p(const char *format, ...)=0;
};

class Virt:public virtual Der1, public virtual Der2
{
public:
	Virt():Der1(),Der2() { }
	virtual void p(const char *format, ...)
	{
		va_list arglist;
		va_start(arglist,format);
		vprintf(format, arglist);
		va_end(arglist);
	}
};

int main(int argc, char *argv[])
{
	Virt v;
	v.p("Hello %d\n", 10);
}


>How-To-Repeat:
	
>Fix:
	


-- 
To UNSUBSCRIBE, email to debian-gcc-request@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org