A Question about delete..

[JustSomeGuy]

My question is on the delete syntax

If I allocate a buffer as follows:

unsigned char * buffer = new unsigned char[10];

Then I was told I needed to delete the buffer as:

delete [] buffer;

However I was using:

delete buffer;

1) Which is correct?
2) whats the difference
3) Why didn't I detect any memory leaks?

 

[Kai-Uwe Bux]

My question is on the delete syntax

If I allocate a buffer as follows:

unsigned char * buffer = new unsigned char[10];

Then I was told I needed to delete the buffer as:

delete [] buffer;

However I was using:

delete buffer;

1) Which is correct?

delete []

2) whats the difference

You have to use the [] form for delete if and only if you used the [] form
of new.

3) Why didn't I detect any memory leaks?

Because using the wrong form is undefined behavior, which does not need to
manifest itself in leaks.


Best

Kai-Uwe Bux