Re: gcc fixed size char array initialization bug - known?

From: Al Viro
Date: Thu Aug 02 2007 - 17:09:41 EST


On Thu, Aug 02, 2007 at 10:26:37PM +0200, Guennadi Liakhovetski wrote:
>
> Worse yet, K&R explicitely writes:
>
> <quote>
>
> char pattern[] = "ould";
>
> is a shorthand for the longer but equivalent
>
> char pattern[] = { 'o', 'u', 'l', 'd', '\0' };
>
> </quote>
>
> In the latter spelling gcc < 4.2 DOES warn too.

Does warn for what? Array with known size? Sure, so it should - you
have excess initializer list elements.

Note the [] in the quoted - it does matter.

Again, it's perfectly legitimate to use string literal to initialize
any kind of array of character type. \0 goes there only if there's
space for it; if array size is unknown, the space is left. That's it.
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