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The following code (taken from here):
int* ptr = int();
compiles in Visual C++ and value-initializes the pointer.
How is that possible? I mean int() yields an object of type int and I can’t assign an int to a pointer.
How is the code above not illegal?
int()is a constant expression with a value of 0, so it’s a valid way of producing a null pointer constant. Ultimately, it’s just a slightly different way of sayingint *ptr = NULL;