clang/test/SemaCXX/accessible-base.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -DMS -fms-compatibility -Wmicrosoft-inaccessible-base -fsyntax-only -verify %s
   3
   4 struct A {
   5   int a;
   6 };
   7
   8 struct X1 : virtual A
   9 {};
  10
  11 struct Y1 : X1, virtual A
  12 {};
  13
  14 struct Y2 : X1, A // expected-warning{{direct base 'A' is inaccessible due to ambiguity:\n    struct Y2 -> X1 -> A\n    struct Y2 -> A}}
  15 {};
  16
  17 struct X2 : A
  18 {};
  19
  20 struct Z1 : X2, virtual A // expected-warning{{direct base 'A' is inaccessible due to ambiguity:\n    struct Z1 -> X2 -> A\n    struct Z1 -> A}}
  21 {};
  22
  23 struct Z2 : X2, A // expected-warning{{direct base 'A' is inaccessible due to ambiguity:\n    struct Z2 -> X2 -> A\n    struct Z2 -> A}}
  24 {};
  25
  26 A *y2_to_a(Y2 *p) {
  27 #ifdef MS
  28   // expected-warning@+4 {{accessing inaccessible direct base 'A' of 'Y2' is a Microsoft extension}}
  29 #else
  30   // expected-error@+2 {{ambiguous conversion}}
  31 #endif
  32   return p;
  33 }
  34
  35 A *z1_to_a(Z1 *p) {
  36 #ifdef MS
  37   // expected-warning@+4 {{accessing inaccessible direct base 'A' of 'Z1' is a Microsoft extension}}
  38 #else
  39   // expected-error@+2 {{ambiguous conversion}}
  40 #endif
  41   return p;
  42 }
  43
  44 A *z1_to_a(Z2 *p) {
  45 #ifdef MS
  46   // expected-warning@+4 {{accessing inaccessible direct base 'A' of 'Z2' is a Microsoft extension}}
  47 #else
  48   // expected-error@+2 {{ambiguous conversion}}
  49 #endif
  50   return p;
  51 }