operator with no argeuments and a requires claus fail to parse

[dominik nussbaumer]

I noticed that operators with no arguments in classes fail to parse when a requires clause is used. The current development version also fails to parse this.

Here are two failing minimal examples and one that parses fine.

template <typename T> struct test {
  operator int() requires true { return 0; }
};

example.cpp:2:32: error: syntax error: operator [syntaxError]
operator int() requires true { return 0; }
^
Active checkers: There was critical errors

template <typename T> struct test {
  bool operator()() requires true { return true; }
};

example.cpp:4:36: error: syntax error: operator [syntaxError]
bool operator()() requires true { return true; }
^
Active checkers: There was critical errors

template <typename T> struct test {
   bool operator()(int a) requires true { return true; }
};

The last one parses fine.

[CHR]

Thanks for reporting, see https://trac.cppcheck.net/ticket/10251