clang/test/AST/cxx2c-variadic-friends.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -ast-dump -std=c++2c %s | FileCheck %s
   2 // RUN: %clang_cc1 -ast-print -std=c++2c %s | FileCheck %s --check-prefix=PRINT
   3 // RUN: %clang_cc1 -emit-pch -std=c++2c -o %t %s
   4 // RUN: %clang_cc1 -x c++ -std=c++2c -include-pch %t -ast-dump-all /dev/null
   5
   6 struct S;
   7 template <typename> struct TS; // #template
   8
   9 // CHECK-LABEL: CXXRecordDecl {{.*}} struct Friends
  10 // PRINT-LABEL: struct Friends {
  11 struct Friends {
  12   // CHECK: FriendDecl {{.*}} 'int'
  13   // CHECK-NEXT: FriendDecl {{.*}} 'long'
  14   // PRINT-NEXT: friend int;
  15   // PRINT-NEXT: friend long;
  16   friend int, long;
  17
  18   // CHECK-NEXT: FriendDecl {{.*}} 'int'
  19   // CHECK-NEXT: FriendDecl {{.*}} 'long'
  20   // CHECK-NEXT: FriendDecl {{.*}} 'char'
  21   // PRINT-NEXT: friend int;
  22   // PRINT-NEXT: friend long;
  23   // PRINT-NEXT: friend char;
  24   friend int, long, char;
  25
  26   // CHECK-NEXT: FriendDecl {{.*}} 'S'
  27   // PRINT-NEXT: friend S;
  28   friend S;
  29
  30   // CHECK-NEXT: FriendDecl {{.*}} 'S'
  31   // CHECK-NEXT: FriendDecl {{.*}} 'S'
  32   // CHECK-NEXT: FriendDecl {{.*}} 'S'
  33   // PRINT-NEXT: friend S;
  34   // PRINT-NEXT: friend S;
  35   // PRINT-NEXT: friend S;
  36   friend S, S, S;
  37
  38   // CHECK-NEXT: FriendDecl
  39   // CHECK-NEXT: ClassTemplateDecl {{.*}} friend TS
  40   // PRINT-NEXT: friend template <typename> struct TS;
  41   template <typename> friend struct TS;
  42 };
  43
  44 namespace specialisations {
  45 template<class T>
  46 struct C {
  47   template<class U> struct Nested;
  48 };
  49
  50 struct N {
  51   template<class U> class C;
  52 };
  53
  54 // CHECK-LABEL: ClassTemplateDecl {{.*}} Variadic
  55 // PRINT-LABEL: template <typename ...Pack> struct Variadic {
  56 template <typename ...Pack> struct Variadic {
  57   // CHECK: FriendDecl {{.*}} 'Pack'...
  58   // CHECK-NEXT: FriendDecl {{.*}} 'long'
  59   // CHECK-NEXT: FriendDecl {{.*}} 'Pack'...
  60   // PRINT-NEXT: friend Pack...;
  61   // PRINT-NEXT: friend long;
  62   // PRINT-NEXT: friend Pack...;
  63   friend Pack..., long, Pack...;
  64
  65   // CHECK-NEXT: FriendDecl {{.*}} 'TS<Pack>'...
  66   // PRINT-NEXT: friend TS<Pack>...;
  67   friend TS<Pack>...;
  68 };
  69
  70 // CHECK-LABEL: ClassTemplateDecl {{.*}} S2
  71 // PRINT-LABEL: template <class ...Ts> struct S2 {
  72 template<class ...Ts> struct S2 {
  73   // CHECK: FriendDecl {{.*}} 'class C<Ts>':'C<Ts>'...
  74   // PRINT-NEXT: friend class C<Ts>...;
  75   friend class C<Ts>...;
  76
  77   // CHECK-NEXT: FriendDecl {{.*}} 'class N::C<Ts>':'C<Ts>'...
  78   // PRINT-NEXT: friend class N::C<Ts>...
  79   friend class N::C<Ts>...;
  80 };
  81 }