[Bug c++/42272] derived template default argument

[debian dot templier at free dot fr]

------- Comment #7 from debian dot templier at free dot fr  2009-12-04 17:44 -------
template < typename X , typename XT2 =T , typename X2 = typename XT2 :: 
X > SMART(SMART<X> & value) : data(value.CastUp) {} ;

The code to do the constructor 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42272