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DarkSpy · Guest

the question with Borland C++ BuilderX 1.0's Compile:
class A
{
public:
void * operator new (size_t size) { ... }
void operator delete (void *p) { ... }

void * operator new (size_t size, void *p) { ... }
//placement new
void operator delete(void *p1, void *p2) { ... }
//placement delete
};

that whas error with two "operator delete functions"

with "void operator delete(void *p1, void *p2) { ... } "
1.cpp": E2238 Multiple declaration for 'A' at line 21

with "void operator delete (void *p) { ... }"
1.cpp": E2344 Earlier declaration of 'A' at line 10

when i removed *ANY* one of the "operator delete" function, that was
ok.

is the void operator delete (void *p1, void *p2) do nothing with
placement operator new ?, because the C++BuilderX 's help document
wrote:

The second function (means: void operator delete(void *, void *); ) is
called by a placement delete expression corresponding to a new
expression of the form new(std::size_t). It does nothing.

thanks all anyway.

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Ivan Vecerina · Guest

"DarkSpy" <coneos (AT) 21cn (DOT) com> wrote