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Gianluca Silvestri
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 Posted: Sat Feb 26, 2005 3:41 pm Post subject: POD's initializations |
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Hi,
Where in the standard can I find explained the difference between these two
initializations:
struct POD
{
int a;
};
int main()
{
POD* p1 = new POD; //indeterminat value of p1
POD* p2 = new POD(); //default-inizialized
}
Thanks
Gianluca Silvestri
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Victor Bazarov
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| Posted: Sun Feb 27, 2005 9:59 pm Post subject: Re: POD's initializations |
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"Gianluca Silvestri" <clcppmod-poster (AT) not (DOT) a.valid.address> wrote...
| Quote: | Where in the standard can I find explained the difference between these
two initializations:
struct POD
{
int a;
};
int main()
{
POD* p1 = new POD; //indeterminat value of p1
POD* p2 = new POD(); //default-inizialized
}
|
5.3.4/15
---
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Ron Natalie
Guest
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| Posted: Mon Feb 28, 2005 5:06 pm Post subject: Re: POD's initializations |
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|
Gianluca Silvestri wrote:
| Quote: | Hi,
Where in the standard can I find explained the difference between thesetwo
initializations:
POD* p1 = new POD; //indeterminat value of p1
POD* p2 = new POD(); //default-inizialized
|
5.3.4 / 15
A new-expression that creates an object of type T initializes that objectas follows:
— If the new-initializer is omitted:
— If T is a (possibly cv-qualified) non-POD class type (or array thereof), the object is defaultinitialized
(8.5). If T is a const-qualified type, the underlying class type shall have a user-declared
default constructor.
— Otherwise, the object created has indeterminate value. If T is a const-qualified type, or a (possibly
cv-qualified) POD class type (or array thereof) containing (directly or indirectly) a member of
const-qualified type, the program is ill-formed;
— If the new-initializer is of the form (), the item is value-initialized (8.5);
---
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