Author
anonymous
over 3 years ago
Language
C++
Compiler
gcc HEAD 12.0.0 20210721 (experimental)
Options
Warnings
Boost 1.73.0
C++2b
no pedantic
Author
anonymous
over 3 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-head/include -std=c++2b prog.cc: In function 'int main()':
prog.cc:13:51: error: class template argument deduction failed:
13 | [[maybe_unused]] std_array_with_3 ar3 = {1,2,3};//ng
| ^
prog.cc:13:51: error: no matching function for call to 'array(int, int, int)'
In file included from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/12.0.0/array:267:5: note: candidate: 'template<class T, class _Tp, class ... _Up> std::array(_Tp, _Up ...)-> std::array<typename std::enable_if<(is_same_v<_Tp, _Up> && ...), _Tp>::type, (1 + sizeof... (_Up))> requires __is_same(std::std_array_with_3<T>, std::array<typename std::enable_if<(is_same_v<_Tp, _Up> && ...), _Tp>::type, 1 + sizeof ... (_Up ...)>)'
267 | array(_Tp, _Up...)
| ^~~~~
/opt/wandbox/gcc-head/include/c++/12.0.0/array:267:5: note: template argument deduction/substitution failed:
prog.cc:13:51: note: couldn't deduce template parameter 'T'
13 | [[maybe_unused]] std_array_with_3 ar3 = {1,2,3};//ng
| ^
In file included from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/12.0.0/array:95:12: note: candidate: 'template<class T> array(std::array<T, 3>)-> std::array<T, 3>'
95 | struct array
| ^~~~~
/opt/wandbox/gcc-head/include/c++/12.0.0/array:95:12: note: template argument deduction/substitution failed:
prog.cc:13:51: note: mismatched types 'std::array<T, 3>' and 'int'
13 | [[maybe_unused]] std_array_with_3 ar3 = {1,2,3};//ng
| ^
In file included from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/12.0.0/array:95:12: note: candidate: 'template<class T> array()-> std::array<T, 3>'
95 | struct array
| ^~~~~
/opt/wandbox/gcc-head/include/c++/12.0.0/array:95:12: note: template argument deduction/substitution failed:
prog.cc:13:51: note: candidate expects 0 arguments, 3 provided
13 | [[maybe_unused]] std_array_with_3 ar3 = {1,2,3};//ng
| ^
Exit Code:
1