Can you check the size memory allocated on heap if the buffer contains ‘0’ characters?
char *c = new char[6]; //random size memory
memset(c, 0, 6);
Can you check the size memory allocated on heap if the buffer contains ‘0’
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Can you check the size memory allocated on heap if the buffer contains ‘0’ characters?
char *c = new char[6]; //random size memory
memset(c, 0, 6);
There’s no reliable way to do that – you have to store that information yourself.
operator new[]()function can be implemented (and replaced by you) in whatever way so you just can’t know the size unless you know the exact implementation in details.In Visual C++ the default implementation for built-in types is to just forward calls to
malloc()– then you could try_msize(), but again it’s unportable and maybe even unreliable.