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

[Jakub Jelinek]

On Thu, Aug 02, 2007 at 09:55:51PM +0200, Guennadi Liakhovetski wrote:
> I've run across the following gcc "feature":
> 
> 	char c[4] = "01234";
> 
> gcc emits a nice warning
> 
> warning: initializer-string for array of chars is too long
> 
> But do a
> 
> 	char c[4] = "0123";
> 
> and - a wonder - no warning. No warning with gcc 3.3.2, 3.3.5, 3.4.5, 
> 4.1.2. I was told 4.2.x does produce a warning.

4.2.x nor 4.3 doesn't warn either and it is correct not to warn about
perfectly valid code.
ISO C99 is very obvious in that the terminating '\0' (resp. L'\0') from
the string literal is only added if there is room in the array or if the
array has unknown size.

	Jakub
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/