STD_UNEXPECTED.cpp

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// checking for std::unexpected()
 
 
// will fail if namespaces aren't supported
namespace std {
 
// looking for a definition in compiler support library
void unexpected ();
 
}
 
// will cause an error if namespace std isn't being honored
int unexpected ();
 
int main (int argc, char *argv[])
{
    (void)&argv;
 
    if (argc > 1)
        std::unexpected ();
 
    return 0;
}