Will delete operator throw any exception?

[siddhu]

What happens when deletion falis?Does operator delete function throw
exception?
I assume that nothrow is not available with delete. Or is it available?

 

[Gianni Mariani]

What happens when deletion falis?Does operator delete function throw
exception?
I assume that nothrow is not available with delete. Or is it available?

Nothing stops delete from thowing, however, don't ever do it.

Bad things happen when delete throws.

 

[siddhu]

Nothing stops delete from thowing, however, don't ever do it.

Bad things happen when delete throws.

Does operator delete function which we get from compiler has any
exception specification?

 

[Robert Bauck Hamar]

Does operator delete function which we get from compiler has any
exception specification?

Yes: throw(). Note however that this doesn't mean destructors can't throw.
So a delete statement can still throw with the builtin operator delete().

 

[James Kanze]

What happens when deletion falis?Does operator delete function throw
exception?
I assume that nothrow is not available with delete. Or is it available?

By definition, a deletion cannot fail. No matter what happens
in it, the object doesn't exist after deletion, so deletion
hasn't failed.

There are a (very) few patterns which count on a destructor
throwing an exception. In every case, however, the object which
does this is constructed in place of a throw statement, because
an error has been detected, and should only be used as a
temporary, and never be the object of a delete (nor, in fact,
have a lifetime long enough for anything else to be able to
raise an exception while it lives).

And the operator delete() function has an empty exception
specification, and so is not allowed to throw an exception.

 

[Ron Natalie]

Nothing stops delete from thowing, however, don't ever do it.

Bad things happen when delete throws.

I can't imagine why the deallocation would throw (barring previous
undefined behavior). However, the destructor could throw an exception.
That however as stated above is a BAD idea. There are places where
a destructor throw would not be catchable which is bad.