g++ -Weffc++

from man g++

-Weffc++ (C++ only)
Warn about violations of the following style guidelines from Scott
Meyers' Effective C++ book:

* Item 11: Define a copy constructor and an assignment operator
for classes with dynamically allocated memory.

* Item 12: Prefer initialization to assignment in constructors.

* Item 14: Make destructors virtual in base classes.

* Item 15: Have "operator=" return a reference to *this.

* Item 23: Don't try to return a reference when you must return
an object.

Also warn about violations of the following style guidelines from
Scott Meyers' More Effective C++ book:

* Item 6: Distinguish between prefix and postfix forms of incre-
ment and decrement operators.

* Item 7: Never overload "&&", "||", or ",".

When selecting this option, be aware that the standard library
headers do not obey all of these guidelines; use grep -v to filter
out those warnings.