Al Viro wrote:-
> Egads... After rereading that... What a mess.
>
> int foo(void)
> {
> static int a[1][0,2];
> }
>
> is, AFAICS, allowed. Reason:
> int a[0,2]
> is a VLA due to 6.7.5.2[4] (0,2 is not an ICE). However, due to the language
> in the same section,
> int a[1][0,2]
> is *not* a VLA, since (a) 2 is an ICE and (b) its element type "has a known
> constant size" (it does - the value of 0,2 is certainly guaranteed to be 2).
> I.e., it's VM type, but not a VLA. I.e. only the first part of 6.7.5.2[2]
> applies and we are actually fine.
>
> So we can have a static single-element array of int [0,2], but
> not a plain static int [0,2]. Lovely, that...
DR 312 clarified the meaning of "known constant size"
http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_312.htm
in the sensible way, thankfully, so your example is actually invalid.
Neil.
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