Re: delete
On 2007-11-06 13:39:54 -0500, "Scott McPhillips [MVP]"
<org-dot-mvps-at-scottmcp> said:
"Christopher" <cpisz@austin.rr.com> wrote in message
news:1194372582.668032.83740@y27g2000pre.googlegroups.com...
If I call delete on a pointer is it guarenteed to set that pointer to
NULL on all implementations?
Nope. But it would be a real good idea to follow your delete by
setting that pointer to NULL yourself. This will help you catch
(mis)use of a deleted pointer during debugging.
The benefits from doing this are mostly illusory.
~MyType()
{
delete my_member_ptr;
my_member_ptr = 0; // silly
}
void delete_it(T *ptr)
{
delete ptr;
ptr = 0; // silly, and doesn't affect the pointer that was used to call
this function
}
That's not to say that setting pointers to NULL is never useful, but it
should be done as part of an overall design, not as a hack that may or
may not help during debugging.
--
Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com) Author of "The
Standard C++ Library Extensions: a Tutorial and Reference
(www.petebecker.com/tr1book)
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