code review 2258044: go_spec: composite literals are addressable

go_spec: composite literals are addressable

[stephenm, 2010-09-24 03:28:48]

Hello gri (cc: golang-dev@googlegroups.com),

I'd like you to review this change.

[rsc, 2010-09-24 04:14:37]

> go_spec: composite literals are addressable

They're not, really.  Addressable means more than you
can take & of them.  It means you can assign to one
or make a method call on one, and neither of those is true.

For example,

    [2]int{1,2}[0] = 3

is illegal.  The &composite-literal syntax is a special
case documented in the composite literal section:

    Taking the address of a composite literal
    (§Address operators) generates a unique pointer
    to an instance of the literal's value.

It should probably be mentioned in the Address operators
section too, but they're not generally addressable.

Russ

[rsc1, 2010-11-01 20:45:00]

assuming abandoned