gcc/testsuite/gdc.test/compilable/test16627.d

   1 void test()
   2 {
   3     int a;
   4
   5     struct Field
   6     {
   7         this(this) { ++a; }
   8         ~this() { --a; }
   9     }
  10
  11     struct S
  12     {
  13         Field field; // generates __fieldPostblit, __fieldDtor, and opAssign
  14     }
  15
  16     static assert(__traits(isNested, Field));
  17     static assert(!__traits(isNested, S));
  18 }