modernize-use-default-member-init

This check converts a default constructor’s member initializers into the new default member initializers in C++11. Other member initializers that match the default member initializer are removed. This can reduce repeated code or allow use of ‘= default’.

struct A {
  A() : i(5), j(10.0) {}
  A(int i) : i(i), j(10.0) {}
  int i;
  double j;
};

// becomes

struct A {
  A() {}
  A(int i) : i(i) {}
  int i{5};
  double j{10.0};
};

Note

Only converts member initializers for built-in types, enums, and pointers. The readability-redundant-member-init check will remove redundant member initializers for classes.

Options

UseAssignment

If this option is set to true (default is false), the check will initialise members with an assignment. For example:

struct A {
  A() {}
  A(int i) : i(i) {}
  int i = 5;
  double j = 10.0;
};

IgnoreMacros

If this option is set to true (default is true), the check will not warn about members declared inside macros.