c++ - namespace called 'exception' leads to compile problems -


i have problem namespace called "exception"

let's consider following example header:

#include <exception>  namespace exception {   struct myexception : public std::exception   {}; }   struct anotherexception : public exception::myexception {     anotherexception() : exception::myexception() { } };

this header not compile following error:

      namespacetest.hpp: in constructor 'anotherexception::anotherexception()':     namespacetest.hpp:12:48: error: expected class-name before '(' token     namespacetest.hpp:12:48: error: expected '{' before '(' token

there 2 solutions this:

1) qualify namespace "::" in line 12

anotherexception() : ::exception::myexception() { }

2) rename namespace e.g. "exceptional"

what reason, namespace "exceptions" leads confusion? know there class std::exception. cause trouble?

i know there class std::exception. cause trouble?

yes. within std::exception, unqualified name exception injected class name. inherited so, within class, unqualified exception refers that, not namespace.


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