On 04/06/2017 09:16 PM, Richard Biener wrote:
On April 6, 2017 8:12:29 PM GMT+02:00, Bernd Edlinger
<bernd.edlin...@hotmail.de> wrote:
But isn't the effective type changed by the assignment b[1] = 0;
as described in 6.5(6):
"If a value is stored into an object having no declared type through an
lvalue having a type that is not a character type, then the type of the
lvalue becomes the effective type of the object for that access and for
subsequent accesses that do not modify the stored value."
Yes. I think the example is valid. At least GCCs memory model makes it so.
As far as I understand the standard, C does not permit changing the
effective type of an object if it has a declared type (at least not
without a union). If GCC supports it, that's an undocumented GCC extension.
Thanks,
Florian
