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A Question about delete..

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?

Jun 8 '06 #1
1 1540
JustSomeGuy wrote:
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
Jun 8 '06 #2

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