gcc/testsuite/gdc.dg/torture/gdc35.d

   1 // https://bugzilla.gdcproject.org/show_bug.cgi?id=35
   2 // { dg-do run }
   3 // { dg-skip-if "needs gcc/config.d" { ! d_runtime } }
   4
   5 /**
   6  * Here the BinaryHeap instance uses an alias parameter and therefore
   7  * the instance's functions (percolateDown) need to be generated in
   8  * topNIndex->BinaryHeap scope and not in the declaration scope
   9  * (module->BinaryHeap).
  10  */
  11 void topNIndex()()
  12 {
  13     bool indirectLess(int a, int b)
  14     {
  15         return a > b;
  16     }
  17
  18     auto a = BinaryHeap!(indirectLess)();
  19 }
  20
  21 struct BinaryHeap(alias less)
  22 {
  23     void percolateDown()
  24     {
  25         less(0, 1);
  26     }
  27 }
  28
  29 void test35a()
  30 {
  31     topNIndex();
  32 }
  33
  34 /*
  35  * Similar as test35a but with an additional indirection.
  36  * The nested function chain for percolateDown should look like this:
  37  * topNIndex2->BinaryHeap2->percolateDown.
  38  */
  39 void topNIndex2()()
  40 {
  41     bool indirectLess(int a, int b)
  42     {
  43         return a > b;
  44     }
  45     auto a = BinaryHeap2!(S35b!(indirectLess)())();
  46 }
  47
  48 struct S35b(alias a)
  49 {
  50     void foo()
  51     {
  52         a(0, 0);
  53     }
  54 }
  55
  56 struct BinaryHeap2(alias less)
  57 {
  58     void percolateDown()
  59     {
  60         less.foo();
  61     }
  62 }
  63
  64 void test35b()
  65 {
  66     topNIndex2();
  67 }
  68
  69 void main()
  70 {
  71     test35a();
  72     test35b();
  73 }