Template error detection bug.

[Håkan Källberg]

Hello!

Here is an impossible program that causes egcs to give up.

Regards:			HÃ¥kan

% c++ -v
Reading specs from /usr/lib/gcc-lib/i586-pc-linux-gnulibc1/egcs-2.91.57/specs
gcc version egcs-2.91.57 19980901 (egcs-1.1 release)

------8<----------------
template< class T > 
class y : public T {
};

const y< x& > yy;
------8<----------------

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