[Bug libstdc++/19535] Wrong return types for __pair_get<1>

[peturr02 at ru dot is]

------- Additional Comments From peturr02 at ru dot is  2005-01-19 17:06 -------
Created an attachment (id=7993)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7993&action=view)
Test case

Compiling this fails with:

g++0116 -Wall  -static	1.cc   -o 1
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility: In function
‘typename std::tr1::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
std::tr1::get(std::pair<_Tp1, _Tp2>&) [with int _Int = 1, _Tp1 = A, _Tp2 = B]Â’:

1.cc:9:   instantiated from here
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:80: error:
invalid initialization of reference of type ‘B&’ from expression of type ‘A’
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility: In function
‘const typename std::tr1::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
std::tr1::get(const std::pair<_Tp1, _Tp2>&) [with int _Int = 1, _Tp1 = B, _Tp2
= A]Â’:
1.cc:12:   instantiated from here
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:85: error:
invalid initialization of reference of type ‘const A&’ from expression of type
‘const B’
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility: In static
member function ‘static _Tp1& std::tr1::__pair_get<1>::__get(std::pair<_T1,
_T2>&) [with _Tp1 = A, _Tp2 = B]Â’:
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:80:	
instantiated from ‘typename std::tr1::tuple_element<_Int, std::pair<_Tp1, _Tp2>
>::type& std::tr1::get(std::pair<_Tp1, _Tp2>&) [with int _Int = 1, _Tp1 = A,
_Tp2 = B]Â’
1.cc:9:   instantiated from here
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:70: error:
invalid initialization of reference of type ‘A&’ from expression of type ‘B’
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility: In static
member function ‘static const _Tp1& std::tr1::__pair_get<1>::__const_get(const
std::pair<_T1, _T2>&) [with _Tp1 = B, _Tp2 = A]Â’:
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:85:	
instantiated from ‘const typename std::tr1::tuple_element<_Int, std::pair<_Tp1,
_Tp2> >::type& std::tr1::get(const std::pair<_Tp1, _Tp2>&) [with int _Int = 1,
_Tp1 = B, _Tp2 = A]Â’
1.cc:12:   instantiated from here
/usr/local/lib/gcc/i686-pc-linux-gnu/4.0.0/include/c++/tr1/utility:74: error:
invalid initialization of reference of type ‘const B&’ from expression of type
‘const A’
make: *** [1] Error 1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19535