This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 115d. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2024-10-26

1641. Assignment in member initializer

There appears to be no prohibition of assignments in member initializer expressions (neither mem-initializers nor brace-or-equal-initializers):

  struct A {
    int x;
    int y = x = 37;
  };

This seems surprising. Should it be allowed?

Rationale (April, 2013):

CWG saw no problems with the example. It did note, however, that the assignment to x is not an initialization, so x would not be considered to have been initialized by this example.