gcc/testsuite/g++.old-deja/g++.martin/new1.C

   1 // { dg-do run  }
   2 //Lifetime of temporaries:
   3 //egcs 2.92 performs cleanup for temporaries inside new expressions
   4 //after the new is complete, not at the end of the full expression.
   5
   6 #include <new>
   7 #include <cstdlib>
   8 #include <cstdio>
   9
  10 bool new_throws;
  11 bool ctor_throws;
  12
  13 int new_done;
  14 int ctor_done;
  15 int func_done;
  16 int dtor_done;
  17 int delete_done;
  18
  19 int count;
  20
  21 void init()
  22 {
  23   new_throws = ctor_throws = false;
  24   new_done = ctor_done = func_done = dtor_done = delete_done = count = 0;
  25 }
  26
  27 struct line_error{
  28   int line;
  29   line_error(int i):line(i){}
  30 };
  31
  32 #define CHECK(cond)  if(!(cond))throw line_error(__LINE__);
  33
  34 struct A{
  35   A(int){
  36     ctor_done = ++count;
  37     if(ctor_throws)
  38       throw 1;
  39   }
  40   A(const A&){
  41     CHECK(false); //no copy constructors in this code
  42   }
  43   ~A(){
  44     dtor_done = ++count;
  45   }
  46   A* addr(){return this;}
  47 };
  48
  49 struct B{
  50   B(A*){}
  51   void* operator new(size_t s){
  52     new_done = ++count;
  53     if(new_throws)
  54       throw 1;
  55     return malloc(s);
  56   }
  57   void operator delete(void *){
  58     delete_done = ++count;
  59   }
  60 };
  61
  62 void func(B* )
  63 {
  64   func_done = ++count;
  65 }
  66
  67 void test1()
  68 {
  69   init();
  70   try{
  71     func(new B(A(10).addr()));
  72   }catch(int){
  73   }
  74   CHECK(new_done==1);
  75   CHECK(ctor_done==2);
  76   CHECK(func_done==3);
  77   CHECK(dtor_done==4);
  78   CHECK(delete_done==0);
  79 }
  80
  81 void test2()
  82 {
  83   init();
  84   new_throws = true;
  85   try{
  86     func(new B(A(10).addr()));
  87   }catch(int){
  88   }
  89   CHECK(new_done==1);
  90   CHECK(ctor_done==0);
  91   CHECK(func_done==0);
  92   CHECK(dtor_done==0);
  93   CHECK(delete_done==0);
  94 }
  95
  96 void test3()
  97 {
  98   init();
  99   ctor_throws = true;
 100   try{
 101     func(new B(A(10).addr()));
 102   }catch(int){
 103   }
 104   CHECK(new_done==1);
 105   CHECK(ctor_done==2);
 106   CHECK(func_done==0);
 107   CHECK(dtor_done==0);
 108   CHECK(delete_done==3);
 109 }
 110
 111 int main()
 112 {
 113   try{
 114     test1();
 115     test2();
 116     test3();
 117   }catch(line_error e){
 118     printf("Got error in line %d\n",e.line);
 119     return 1;
 120   }
 121   return 0;
 122 }