Re: Difference between new A and new A()
On 11/26/2010 15:40, Daniel Kr?gler wrote:
Am 25.11.2010 23:48, schrieb Martin Bonner:
On Nov 25, 8:41 am, Mathias Gaunard<loufo...@gmail.com> wrote:
On Nov 24, 10:48 am, sourav<souravs...@gmail.com> wrote:
What is the difference between
A *a = new A;
A *a = new A();
While A *a = new A; is supposed to only be a default-initialization,
it seems to be a value-initialization on a variety of popular
compilers.
How can you tell? Given that a default initialized object (of
fundamental type) doesn't have a defined value, there is no way to
tell (that I can see).
In portable mode:
[lengthy explanations snipped away]
I see now that I misunderstood your question. I agree that there is no 100% safe test possible to detect the difference, because the memory for the default-initialized object may just be filled with the same value of a value-initialized one.
Sorry for the noise & Greetings from Bremen,
Daniel Kr?gler
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