Duplicate fields when initializing constructor


Sion0

Sorry for possible repetition. I don't know how to google it.

Is it possible to repeat fields in the initializer list of a const constructor?

example:

const struct first _first = {
    .value = 1,
    .value = 2, /* same field again */
};

const struct second _second = {
    .first = _first,
    .first.value = 3, /* and again */
};

The second case is of course more important.

dbush

This is allowed, and future initializers will overwrite all previous initializers.

This is specified in section 6.7.9p19 of the C standard:

Initialization shall be in initializer list order, each initializer provided for a particular subobject shall override any initializers previously listed for the same subobject; 151) All subobjects not explicitly initialized shall be treated with static storage duration The object is implicitly initialized.

151) Any initializers of the overridden subobject, so initializers not used to initialize that subobject may not be evaluated at all.

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Duplicate fields when initializing constructor

Sion0 Sorry for possible repetition. I don't know how to google it. Is it possible to repeat fields in the initializer list of a const constructor? example: const struct first _first = { .value = 1, .value = 2, /* same field again */ }; const struct s

Duplicate fields when initializing constructor

Sion0 Sorry for possible repetition. I don't know how to google it. Is it possible to repeat fields in the initializer list of a const constructor? example: const struct first _first = { .value = 1, .value = 2, /* same field again */ }; const struct s

Duplicate fields when initializing constructor

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