Author
anonymous
over 5 years ago
Language
C++
Compiler
gcc HEAD 10.0.0 20200113 (experimental)
Options
Warnings
Boost 1.72.0
C++2a(GNU)
no pedantic
Author
anonymous
over 5 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.72.0/gcc-head/include -std=gnu++2a prog.cc: In function 'int main()':
prog.cc:40:29: error: call of overloaded 'show_value(MyAlpha)' is ambiguous
40 | show_value(MyAlpha(BETA));
| ^
prog.cc:28:6: note: candidate: 'void show_value(T) [with T = MyAlpha; typename std::enable_if<std::is_enum<_Tp>::value>::type* <anonymous> = 0]'
28 | void show_value(T x) { cout<<"Enum: "<<(int)x<<endl; };
| ^~~~~~~~~~
prog.cc:30:6: note: candidate: 'void show_value(int)'
30 | void show_value(int x) { cout<<"Int: "<<x<<endl; };
| ^~~~~~~~~~
prog.cc:35:6: note: candidate: 'void show_value(T) [with T = MyAlpha]'
35 | void show_value(T x) { cout<<"Obj.text: "<<x.text<<endl; };
| ^~~~~~~~~~
prog.cc:41:29: error: call of overloaded 'show_value(Animal)' is ambiguous
41 | show_value(Animal(RABIT));
| ^
prog.cc:28:6: note: candidate: 'void show_value(T) [with T = Animal; typename std::enable_if<std::is_enum<_Tp>::value>::type* <anonymous> = 0]'
28 | void show_value(T x) { cout<<"Enum: "<<(int)x<<endl; };
| ^~~~~~~~~~
prog.cc:30:6: note: candidate: 'void show_value(int)'
30 | void show_value(int x) { cout<<"Int: "<<x<<endl; };
| ^~~~~~~~~~
prog.cc:35:6: note: candidate: 'void show_value(T) [with T = Animal]'
35 | void show_value(T x) { cout<<"Obj.text: "<<x.text<<endl; };
| ^~~~~~~~~~
prog.cc: In instantiation of 'void show_value(T) [with T = const char*]':
prog.cc:43:27: required from here
prog.cc:35:46: error: request for member 'text' in 'x', which is of non-class type 'const char*'
35 | void show_value(T x) { cout<<"Obj.text: "<<x.text<<endl; };
| ~~^~~~
Exit Code:
1