https://gcc.gnu.org/gcc-7/changes.html

[Jonny Grant]

On 11/07/17 09:56, Jonathan Wakely wrote:
> On 11 July 2017 at 17:51, Jonny Grant wrote:
>> Hello
>> https://gcc.gnu.org/gcc-7/changes.html
>>
>> snprintf (d, sizeof d, "%#02x", x & 0xff);
>>
>>                 ^^
>> Should be:   sizeof(d)  ?
> 
> "The sizeof operator yields the size (in bytes) of its operand, which
> may be an expression or the parenthesized name of a type."
> 
> So the parentheses are only required for a type, not an expression.
> sizeof(d) is the same as sizeof d which is the same as
> sizeof(((((d))))).


Great! I'm learning something new still it seems :)
Jonny