gcc/testsuite/gdc.test/fail_compilation/test23017.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/test23017.d(16): Error: class `test23017.CppChildA` with C++ linkage cannot inherit from class `DClass` with D linkage
   5 ---
   6 */
   7
   8 // https://issues.dlang.org/show_bug.cgi?id=23017
   9 // C++ class may not derive from D class
  10 extern(D) class DClass {}
  11 extern(C++) class CppClass
  12 {
  13     void foo();
  14 }
  15
  16 extern(C++) class CppChildA : DClass {} // error
  17 extern(C++) class CppChildB : CppClass {}
  18
  19 extern(D) class DChildA : DClass {}
  20 extern(D) class DChildB : CppClass {} // automatically made extern(C++)