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<pre>//allloc the memory
int * lastBuffer = new int[1<<m_exp];

//free the memroy by std::free()
std::free(lastBuffer );

the free method is OK? if not ,what's the problem?

Or more info?

NEVER EVER mismatch the "alloaction pairs"

new <-> delete
alloc <-> free

Make a poster and hang it above your bed ;-)
nv3 12-Jul-13 3:03am
In this case it's even "delete []". My 5.
H.Brydon 12-Jul-13 15:35pm
Right, you almost said it but didn't:

new < - > delete
new[] < - > delete []
alloc() < - > free()
KarstenK 15-Jul-13 2:14am
"You got it" ;-)
If you use malloc to allocate memory, use free to deallocate it.
If you use new to allocate memory, use delete to deallocate it.
Never mix them together.

Read what the man himself has to say -[^]
H.Brydon 12-Jul-13 15:36pm
As per solution #1, new goes with delete, new[] goes with delete[]...
+5 anyhow...

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