Templated subclass inside a class causes an internal compiler error

[Jari P Saukkonen <jsaukkon at cs dot Helsinki dot FI>]

Hi.

When trying to compile the following short piece of code, GCC 2.95.2
halts to an internal compiler error. No compiler options are needed to
cause this problem. 

bug.cpp:

  #include <vector>

  class C {
  	template<class T> 
	class Vec : public vector<T> {
		Vec() { }
	};
  };

The internal compiler error can be avoided by either omitting the
constructor or the class 'C' (but obviously it's not much of a help).

I'm using GCC 2.95.2 under somewhat recent Debian GNU/Linux 2.2
with newest gcc/g++ and libstdc++2.10(-dev) (version 2.95.2-8) packages. 
The host system has an i486-compatible Cyrix 6x86 P166+ cpu. 

I have also reproduced this bug on a Sun Ultra E450 (SunOS 5.6, GCC
2.95.1) so the issue shouldn't be platform-specific.

I attached the preparsed file and original source (for clarity) to
this mail. The compiler output is included at the end of the message body.

Please ask for more information if I forgot to mention something. 

++ Jari

---
Jari Saukkonen + jari.saukkonen@cs.helsinki.fi | Coral
programming, music, keyboards, web, demos,  b5 | Nah-kolor
dazzt @ Majik3D RPG     http://www.majik3d.org | Majik



-- compiler output begin --------------------------------------------

jsaukkon@disko:~/bug$ gcc -v --save-temps bug.cpp
Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.2/specs
gcc version 2.95.2 20000313 (Debian GNU/Linux)
 /usr/lib/gcc-lib/i386-linux/2.95.2/cpp -lang-c++ -v -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 -D__cplusplus -D__ELF__ -Dunix -D__i386__ -Dlinux -D__ELF__ -D__unix__ -D__i386__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__EXCEPTIONS -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ bug.cpp bug.ii
GNU CPP version 2.95.2 20000116 (Debian GNU/Linux) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc-lib/i386-linux/2.95.2/../../../../include/g++-3
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/2.95.2/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
 /usr/lib/gcc-lib/i386-linux/2.95.2/../../../../i386-linux/include
End of omitted list.
 /usr/lib/gcc-lib/i386-linux/2.95.2/cc1plus bug.ii -quiet -dumpbase bug.cc -version -o bug.s
GNU C++ version 2.95.2 20000313 (Debian GNU/Linux) (i386-linux) compiled by GNU C version 2.95.2 20000313 (Debian GNU/Linux).
bug.cpp:8: Internal compiler error.
bug.cpp:8: Please submit a full bug report.
bug.cpp:8: See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

-- compiler output end ----------------------------------------------

bug.ii.gz

#include <vector>



class C

{

	template<class T> 

	class Vec : public vector<T>

	{

		Vec() { }

	};

};