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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <iterator>
  4.  
  5.  
  6. size_t st;
  7. struct A{
  8.    char* arr;
  9.    A() {
  10.       printf("+A()   [%+03lld]\n",(size_t)this-st);
  11.       arr=new char[1024*1024];
  12.       for (int i=0;i<1024*1024;i++)
  13.          arr[i]=i;
  14.    }
  15.    ~A() {
  16.       printf("~A()   [%+03lld]\n",(size_t)this-st);
  17.       if (arr)
  18.          delete[] arr;
  19.       arr=nullptr;
  20.    }
  21.    void operator=(A&& r){
  22.       printf("=A(&&) [%+03lld] = [%+03lld]\n",(size_t)this-st,(size_t)&r-st);
  23.       if (arr)
  24.          delete[] arr;
  25.       arr=r.arr;
  26.       r.arr=nullptr;
  27.    }
  28.    void operator=(A& r){
  29.       printf("=A(&)  [%+03lld] = [%+03lld]\n",(size_t)this-st,(size_t)&r-st);
  30.       if (arr)
  31.          delete[] arr;
  32.       arr=new char[1024*1024];
  33.       for (int i=0;i<1024*1024;i++)
  34.          arr[i]=r.arr[i];
  35.    }
  36.    A(A&& r){
  37.       printf("+A(&&) [%+03lld] ([%+03lld])\n",(size_t)this-st,(size_t)&r-st);
  38.       arr=r.arr;
  39.       r.arr=nullptr;
  40.    }
  41.    A(A& r){
  42.       printf("+A(&)  [%+03lld] ([%+03lld])\n",(size_t)this-st,(size_t)&r-st);
  43.       arr=new char[1024*1024];
  44.       for (int i=0;i<1024*1024;i++)
  45.          arr[i]=r.arr[i];
  46.  
  47.    }
  48.    A operator+(A& r) {
  49.       A temp;
  50.       for (int i=0;i<1024*1024;i++)
  51.          temp.arr[i]=arr[i]+r.arr[i];
  52.       printf(" +(&)  [%+03lld] = [%+03lld]+[%+03lld]\n",(size_t)&temp-st,(size_t)this-st,(size_t)&r-st);
  53.       return temp;
  54.    }
  55. };
  56.  
  57. void add(A& a,A& b,A& c){
  58.    printf("f+(&)  [%+03lld] = [%+03lld]+[%+03lld]\n",(size_t)&a-st,(size_t)&b-st,(size_t)&c-st);
  59.    for (int i=0;i<1024*1024;i++)
  60.       a.arr[i]=b.arr[i]+c.arr[i];
  61. }
  62.  
  63. int main(void) {
  64.    int r;st=(size_t)&r;
  65.    printf("\n    ==1==\n");
  66.    {
  67.       A a,b,c;
  68.       a=b+c;
  69.    }
  70.    printf("\n    ==2==\n");
  71.    {
  72.       A a,b,c;
  73.       add(a,b,c);
  74.    }
  75.    system("pause");
  76.    return 0;
  77. }
  78.  
Success #stdin #stdout #stderr 0.01s 6976KB
comments (?)
stdin
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Standard input is empty
stdout
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    ==1==
+A()   [+04]
+A()   [+12]
+A()   [+20]
+A()   [+28]
 +(&)  [+28] = [+12]+[+20]
=A(&&) [+04] = [+28]
~A()   [+28]
~A()   [+20]
~A()   [+12]
~A()   [+04]

    ==2==
+A()   [+12]
+A()   [+20]
+A()   [+28]
f+(&)  [+12] = [+20]+[+28]
~A()   [+28]
~A()   [+20]
~A()   [+12]
stderr
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sh: 1: pause: not found
https://ideone.com/0lsJfF
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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