• Stewart Gordon (13/13) Mar 09 2004 When two or more auto objects go out of scope at the same time, is there...
• Sean Kelly (6/16) Mar 09 2004 If the spec does not mention this then it should be updated. C and C++
• Carlos Santander B. (20/20) Mar 10 2004 "Stewart Gordon" wrote in message

Stewart Gordon <smjg_1998 yahoo.com> writes:

When two or more auto objects go out of scope at the same time, is there 
any official rule over the order in which the destructors are called?

According to the experiments I've done so far (DMD 0.79, Windows 98SE), 
they seem to be always destructed in the reverse order that they were 
declared, whether they were declared at the same level or not.  This is 
indeed the sensible thing to do, since the second object could require 
the first to be valid throughout its lifetime.

But is this guaranteed?  The spec doesn't seem to address the issue.

Stewart.

-- 
My e-mail is valid but not my primary mailbox, aside from its being the 
unfortunate victim of intensive mail-bombing at the moment.  Please keep 
replies on the 'group where everyone may benefit.

Sean Kelly <sean ffwd.cx> writes:

Stewart Gordon wrote:
 When two or more auto objects go out of scope at the same time, is there 
 any official rule over the order in which the destructors are called?
 
 According to the experiments I've done so far (DMD 0.79, Windows 98SE), 
 they seem to be always destructed in the reverse order that they were 
 declared, whether they were declared at the same level or not.  This is 
 indeed the sensible thing to do, since the second object could require 
 the first to be valid throughout its lifetime.
 
 But is this guaranteed?  The spec doesn't seem to address the issue.

If the spec does not mention this then it should be updated.  C and C++ 
gurantee that destruction is in reverse order from declaration, and I 
would be shocked if D weren't the same way, as unpredictable destruction 
order would wreak havoc with app writing.


Sean

"Carlos Santander B." <carlos8294 msn.com> writes:

"Stewart Gordon" <smjg_1998 yahoo.com> wrote in message
news:c2knb9$2ihl$1 digitaldaemon.com
| When two or more auto objects go out of scope at the same
| time, is there any official rule over the order in which
| the destructors are called?
|
| According to the experiments I've done so far (DMD 0.79,
| Windows 98SE), they seem to be always destructed in the
| reverse order that they were declared, whether they were
| declared at the same level or not.  This is indeed the
| sensible thing to do, since the second object could
| require the first to be valid throughout its lifetime.
|
| But is this guaranteed?  The spec doesn't seem to address
| the issue.
|
| Stewart.

IIRC, Walter once said that was true.

-----------------------
Carlos Santander Bernal