От: | Patalog | ||
Дата: | 25.06.21 20:26 | ||
Оценка: |
#include <system_error>
#define FAIL
enum class status
{
ok = 0, fail = 1
};
inline
status get(status s1, status s2)
{
return
#if defined(FAIL)
std::min(s1, s2);
#else
s1;
#endif
}
namespace std
{
template <>
struct is_error_code_enum<status>
: true_type
{};
}
int main()
{
return 0;
}
source>:24:12: error: specialization of 'std::is_error_code_enum<status>' after instantiation
24 | struct is_error_code_enum<status>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
<source>:24:12: error: redefinition of 'struct std::is_error_code_enum<status>'
In file included from <source>:1:
/opt/compiler-explorer/gcc-9.3.0/include/c++/9.3.0/system_error:53:12: note: previous definition of 'struct std::is_error_code_enum<status>'
53 | struct is_error_code_enum : public false_type { };
| ^~~~~~~~~~~~~~~~~~
Compiler returned: 1