override operator new within a file?

[Mark P]

A coworker asked me this. I gather he's trying to track down a memory
leak. Is is possible to override operator new (and delete) only within
a single file?

 

[adrian.hawryluk]

A coworker asked me this. I gather he's trying to track down a memory
leak. Is is possible to override operator new (and delete) only within
a single file?

I beleive so, but it requires doing something very specific at
linking. I think, that if you have several .o/.obj files, and you use
a linker, it will take the order and any functions that exist to the
left will be used on the right.

It's been a while since I've even thought about this so bare with me.

ld -o a.out <some other options and libs> a.o new.o b.o <and some more
options and libs>

Now a.o will use the original new, and b.o should use the new located
in new.o.

I appologiese if this is not entirly correct. Check the ld man/info
page for more (possibly more accurate) info.


Adrian

 

[Sarath]

A coworker asked me this. I gather he's trying to track down a memory
leak. Is is possible to override operator new (and delete) only within
a single file?

If you are dealing with some large source code, it's better to use
some wellknown tools like Bounds Checker (Numega), Intel vTune
Performance analyser etc..

 

[=?iso-8859-1?q?Erik_Wikstr=F6m?=]

A coworker asked me this. I gather he's trying to track down a memory
leak. Is is possible to override operator new (and delete) only within
a single file?

It's technically undefined behaviour but you could try
#define new something