new () keeps core-dump instead of generating exception

[wenmang@yahoo.com]

Hi, all,

I am trying to allocate some objects during application starts up. The
objects are created through new operator, but for some reason, the
application keeps crashing and here is the debug trace:
(gdb) where
#0 0xb64349dd in _int_malloc () from /lib/tls/libc.so.6
#1 0xb6433ced in malloc () from /lib/tls/libc.so.6
#2 0xb659789e in operator new () from /usr/lib/libstdc++.so.5

I am using redhat Linux 2.4.21-15.ELsm, any idea why is that?

[=?utf-8?Q?David_C=C3=B4me?=]

Re: new () keeps core-dump instead of generating exception

On Thu, 06 Mar 2008 20:00:37 +0100, wenmang@yahoo.c om <wenmang@yahoo. com>
wrote:

Hi, all,
>
I am trying to allocate some objects during application starts up. The
objects are created through new operator, but for some reason, the
application keeps crashing and here is the debug trace:
(gdb) where
#0 0xb64349dd in _int_malloc () from /lib/tls/libc.so.6
#1 0xb6433ced in malloc () from /lib/tls/libc.so.6
#2 0xb659789e in operator new () from /usr/lib/libstdc++.so.5
>
I am using redhat Linux 2.4.21-15.ELsm, any idea why is that?

Without some code, we can't help you .

[=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?=]

Re: new () keeps core-dump instead of generating exception

On 2008-03-06 20:00, wenmang@yahoo.c om wrote:

Hi, all,
>
I am trying to allocate some objects during application starts up. The
objects are created through new operator, but for some reason, the
application keeps crashing and here is the debug trace:
(gdb) where
#0 0xb64349dd in _int_malloc () from /lib/tls/libc.so.6
#1 0xb6433ced in malloc () from /lib/tls/libc.so.6
#2 0xb659789e in operator new () from /usr/lib/libstdc++.so.5

In addition to what David said:

Either you have a bad version of libc (not likely) or the problem is in
stack-frame not shown in the above backtracer, find the stack-frame
which is in your code and start looking there.

--
Erik Wikström

[kasthurirangan.balaji@gmail.com]

Re: new () keeps core-dump instead of generating exception

On Mar 7, 2:20 am, Erik Wikström <Erik-wikst...@telia. comwrote:

On 2008-03-06 20:00, wenm...@yahoo.c om wrote:
>

Hi, all,

>

I am trying to allocate some objects during application starts up. The
objects are created through new operator, but for some reason, the
application keeps crashing and here is the debug trace:
(gdb) where
#0  0xb64349dd in _int_malloc () from /lib/tls/libc.so.6
#1  0xb6433ced in malloc () from /lib/tls/libc.so.6
#2  0xb659789e in operator new () from /usr/lib/libstdc++.so.5

>
In addition to what David said:
>
Either you have a bad version of libc (not likely) or the problem is in
stack-frame not shown in the above backtracer, find the stack-frame
which is in your code and start looking there.
>
--
Erik Wikström

as said by others, we need some code as to what/where/how you are
using new. Anyways, new should throw an exception on failure. my guess
is that are you catching the bad allocation exception??
for genericity you may use catch(...) as uncaught exceptions tend to
dump core, atleast in the platforms i have used(aix & sun).

Thanks,
Balaji.

[James Kanze]

Re: new () keeps core-dump instead of generating exception

On Mar 6, 8:00 pm, "wenm...@yahoo. com" <wenm...@yahoo. comwrote:

I am trying to allocate some objects during application starts up. The
objects are created through new operator, but for some reason, the
application keeps crashing and here is the debug trace:
(gdb) where
#0 0xb64349dd in _int_malloc () from /lib/tls/libc.so.6
#1 0xb6433ced in malloc () from /lib/tls/libc.so.6
#2 0xb659789e in operator new () from /usr/lib/libstdc++.so.5

I am using redhat Linux 2.4.21-15.ELsm, any idea why is that?

Any idea as to why you're using redhat Linux, no.

If you meant why you're crashing, it's impossible to say, but in
general, supposing that you've linked in the right versions of
everything, it's probable that you've mucked up the free store
arena with some illegal memory writes earlier. (Or, as someone
else suggested, you've requested more memory than is available,
and aren't catching the exception---and possibly cannot catch
it, if you're still running static initializers.)

--
James Kanze (GABI Software) email:james.kan ze@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34

[Shobhit Gupta]

Re: new () keeps core-dump instead of generating exception

Two things you can try:
1. As suggested by Balaji above, use catch(...)

2. Use the "nothrow" version of new:
e.g.
int *i = new (nothrow) int[10];
if(i==NULL)
{
cout << "see if it comes here" << endl;
}

[James Kanze]

Re: new () keeps core-dump instead of generating exception

On 7 mar, 15:05, Shobhit Gupta <shobhitgupt... @gmail.comwrote :

Two things you can try:
1. As suggested by Balaji above, use catch(...)

Where? He said that it was during program start-up, which I
understand to mean before main.

2. Use the "nothrow" version of new:
e.g.
int *i = new (nothrow) int[10];
if(i==NULL)
{
cout << "see if it comes here" << endl;
}

If new is crashing, then that probably won't change anything.

--
James Kanze (GABI Software) email:james.kan ze@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34