RE: c++/4974: Problem to compile nested heritage of templated cla sses

RE: c++/4974: Problem to compile nested heritage of templated cla sses

[Freissmann Lothar]

The following reply was made to PR c++/4974; it has been noted by GNATS.

From: Freissmann Lothar <freissmannl@thmulti.com>
To: "'Alexandre Oliva'" <aoliva@redhat.com>
Cc:  
Subject: RE: c++/4974: Problem to compile nested heritage of templated cla
	sses
Date: Mon, 3 Dec 2001 10:05:10 +0100 

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 Sorry, but it seems, that the automatic tool used did not work.
 
 Here are the the source code and the ~.ii file greated with g++, version
 2.95.3 20010315 under 
 System OS: Solaris 2.7, creating the following message:
 
 
 g++ -save-temps bug.cpp
 bug.cpp:51: Internal compiler error.
 bug.cpp:51: Please submit a full bug report.
 bug.cpp:51: See <URL:http://www.gnu.org/software/gcc/bugs.html> for
 instructions.
 
 
 
 Following the compiler directives I send you a file minimized to essentials
 showing a compiler crash:
 
 The file contains:
 1. A templated class
 2. a class with a templated subclass which is heriting the templated class.
 
 Bug condition:
 If the constructor of the subclass is only declared (Non_BUG = 1) the
 compiler does not cry; but the compiler fails if the constructor is defined
 in the subclass (Non_BUGGY = 0).
 
 
 
 -----Original Message-----
 From: Alexandre Oliva [mailto:aoliva@redhat.com]
 Sent: Sunday, December 02, 2001 10:06 AM
 To: freissmannl@thmulti.com
 Cc: gcc-gnats@gcc.gnu.org
 Subject: Re: c++/4974: Problem to compile nested heritage of templated
 classes
 
 
 It appears that your attachment didn't make it to the bug report.
 Please post a followup to this message containing the attachment.
 Make sure gcc-gnats@gcc.gnu.org gets a copy, and that the subject
 remains unchanged.  Thanks,
 
 -- 
 Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
 Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
 CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
 Free Software Evangelist    *Please* write to mailing lists, not to me
 
 
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 Content-Type: application/octet-stream;
 	name="bug.cpp"
 Content-Transfer-Encoding: quoted-printable
 Content-Disposition: attachment;
 	filename="bug.cpp"
 
 =0A=
 =0A=
 #include <stdio.h>=0A=
 =0A=
 #define Non_BUGGY 0=0A=
 // =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Templated class =
 heritage:=0A=
 =0A=
 =0A=
 template <int LL>=0A=
 class vector=0A=
 {=0A=
 protected:=0A=
 int *arr;=0A=
 int lgth;=0A=
 =0A=
 public:=0A=
 vector() { arr =3D new int(LL);lgth =3D LL;};=0A=
 vector(int ll) { arr =3D new int(ll); lgth =3D ll;};=0A=
 void=0A=
 put(int in,int ind) { if(0 <=3D ind && ind < lgth) arr[ind] =3D in;=0A=
 			else fprintf(stderr,"ind %d out of bounds [0 %d)!\n",ind,lgth);=0A=
 		    };=0A=
 int=0A=
 get(int ind) { if(0 <=3D ind && ind < lgth) return arr[ind];=0A=
 		else {fprintf(stderr,"ind %d out of bounds [0 %d)!\n",ind,lgth);=0A=
 		      return(-9);=0A=
 		      };=0A=
 	     };=0A=
 };=0A=
 =0A=
 =0A=
 // =
 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
  Using it as subclass:=0A=
 =0A=
 =0A=
 class top_class=0A=
 {=0A=
 // defining subclasses:=0A=
 public:=0A=
 =0A=
   template <int Y>=0A=
   class sub_class: public vector<Y>=0A=
   {=0A=
    int aaa;=0A=
    int gg[Y];=0A=
    public:=0A=
    int yyy;=0A=
    #if(Non_BUGGY)=0A=
    sub_class();=0A=
    #else=0A=
 //template <int Y>=0A=
 sub_class() {};=0A=
    #endif=0A=
 //   sub_class() {/*vector2<y>();*/ gg[0] =3D -1; aaa =3D -9;}; =0A=
   }; // ++++++ sub_class=0A=
 =0A=
 =0A=
 }; // +++++++++++++++=3D top_class=0A=
 =0A=
 #if(Non_BUGGY)=0A=
 template <int Y>=0A=
 top_class::sub_class::sub_class() {};=0A=
 #endif=0A=
 =0A=
 main()=0A=
 {=0A=
 // not possible vector ii;=0A=
 vector<20> iij;=0A=
 vector<-1> kk(15);=0A=
 vector<-1> *def1;=0A=
 vector<-1> *undef;=0A=
 =0A=
 def1 =3D &kk;=0A=
 // This is not possible!! def2 =3D &iij; =0A=
 =0A=
 // undef =3D(vector<9> *) new vector<9>;=0A=
 =0A=
 iij.put(11,19);=0A=
 iij.put(133,20);=0A=
 kk.put(12,14);=0A=
 kk.put(133,15);=0A=
 =0A=
 printf("iij:%d\n",iij.get(19));=0A=
 printf("kk:%d\n",kk.get(14));=0A=
 printf("kk:%d\n",def1->get(14));=0A=
 =0A=
 printf("iij:%d\n",iij.get(20));=0A=
 printf("kk:%d\n",kk.get(15));=0A=
 printf("kk:%d\n",def1->get(15));=0A=
 =0A=
 =0A=
 =0A=
 }=0A=
 
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