Hello everyone,
Why Visual Studio compiler can not optimize in this case? I think this case is almost the same as sample 1, why compiler can optimize sample 1 but can not optimze sample 2?
(sample 2, http://msdn2.microsoft.com/en-us/library/ms364057(vs.80).aspx)
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#include <stdio.h>
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class A {
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public:
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A() {printf ("A: I am in constructor\n");i = 1;}
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~A() { printf ("A: I am in destructor\n"); i = 0;}
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A(const A& a) {printf ("A: I am in copy constructor\n"); i = a.i;}
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int i, x, w;
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};
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class B {
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public:
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A a;
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B() { printf ("B: I am in constructor\n");}
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~B() { printf ("B: I am in destructor\n");}
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B(const B& b) { printf ("B: I am in copy constructor\n");}
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};
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A MyMethod()
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{
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B* b = new B();
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A a = b->a;
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delete b;
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return (a);
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}
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int main()
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{
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A a;
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a = MyMethod();
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}
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thanks in advance,
George
