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  1. #include <iostream>
  2. #include <stdlib.h>
  3.  
  4. struct B{
  5.   B(){std::cout<<"B("<<(void*)this<<")"<<std::endl;}
  6.   ~B(){std::cout<<"B("<<(void*)this<<") del"<<std::endl;}
  7. };
  8. struct A : B{
  9.   A(){std::cout<<"A("<<(void*)this<<")"<<std::endl;}
  10.   ~A(){std::cout<<"A("<<(void*)this<<") del"<<std::endl;}
  11. };
  12.  
  13. int main(){
  14.    A* p = (A*)malloc(sizeof(A));
  15.    std::cout<<(void*)p<<std::endl;
  16.    new(p) A();
  17.    p->~A();
  18.    free(p);
  19.    return 0;
  20. }
Success #stdin #stdout 0.02s 2860KB
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stdin
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Standard input is empty
stdout
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0x88d3008
B(0x88d3008)
A(0x88d3008)
A(0x88d3008) del
B(0x88d3008) del
https://ideone.com/C8PJH
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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