clang/test/Modules/module-private.cpp

   1 // RUN: rm -rf %t
   2 // RUN: %clang_cc1 -std=c++17 -fmodules -fimplicit-module-maps -x objective-c++ -fmodules-cache-path=%t -fmodule-name=module_private_left -emit-module %S/Inputs/module.modulemap
   3 // RUN: %clang_cc1 -std=c++17 -fmodules -fimplicit-module-maps -x objective-c++ -fmodules-cache-path=%t -fmodule-name=module_private_right -emit-module %S/Inputs/module.modulemap
   4 // RUN: %clang_cc1 -std=c++17 -fmodules -fimplicit-module-maps -x objective-c++ -fmodules-cache-path=%t -I %S/Inputs %s -verify
   5 // FIXME: When we have a syntax for modules in C++, use that.
   6
   7 @import module_private_left;
   8 @import module_private_right;
   9
  10 void test() {
  11   int &ir = f0(1.0); // okay: f0() from 'right' is not visible
  12 }
  13
  14 int test_broken() {
  15   HiddenStruct hidden; // expected-error{{unknown type name 'HiddenStruct'}}
  16   Integer i; // expected-error{{unknown type name 'Integer'}}
  17
  18   int *ip = 0;
  19   f1(ip); // expected-error{{use of undeclared identifier 'f1'}}
  20
  21   vector<int> vec; // expected-error{{no template named 'vector'}}
  22
  23   VisibleStruct vs;
  24   vs.field = 0;
  25   vs.setField(1);
  26
  27   return hidden_var; // expected-error{{use of undeclared identifier 'hidden_var'}}
  28 }
  29
  30 // Check for private redeclarations of public entities.
  31 template<typename T>
  32 class public_class_template;
  33
  34 template<typename T>
  35 __module_private__ class public_class_template;
  36
  37
  38 typedef int public_typedef;
  39 typedef __module_private__ int public_typedef;
  40
  41 extern int public_var;
  42 extern __module_private__ int public_var;
  43
  44 void public_func();
  45 __module_private__ void public_func();
  46
  47 template<typename T>
  48 void public_func_template();
  49 template<typename T>
  50 __module_private__ void public_func_template();
  51
  52 struct public_struct;
  53 __module_private__ struct public_struct;
  54
  55 // Check for attempts to make specializations private
  56 template<> __module_private__ void public_func_template<int>(); // expected-error{{template specialization cannot be declared __module_private__}}
  57
  58 template<typename T>
  59 struct public_class {
  60   struct inner_struct;
  61   static int static_var;
  62
  63   friend __module_private__ void public_func_friend();
  64   friend __module_private__ struct public_struct_friend;
  65 };
  66
  67 template<> __module_private__ struct public_class<int>::inner_struct { }; // expected-error{{member specialization cannot be declared __module_private__}}
  68 template<> __module_private__ int public_class<int>::static_var = 17; // expected-error{{member specialization cannot be declared __module_private__}}
  69
  70 template<>
  71 __module_private__ struct public_class<float> { }; // expected-error{{template specialization cannot be declared __module_private__}}
  72
  73 template<typename T>
  74 __module_private__ struct public_class<T *> { }; // expected-error{{partial specialization cannot be declared __module_private__}}
  75
  76 // Check for attempts to make parameters and variables with automatic
  77 // storage module-private.
  78
  79 void local_var_private(__module_private__ int param) { // expected-error{{parameter 'param' cannot be declared __module_private__}}
  80   __module_private__ struct Local { int x, y; } local; //expected-error{{local variable 'local' cannot be declared __module_private__}}
  81
  82   __module_private__ auto [x, y] = local; // expected-error {{local variable '[x, y]' cannot be declared __module_private__}}
  83
  84   __module_private__ struct OtherLocal { int x; }; // expected-error{{local struct cannot be declared __module_private__}}
  85
  86   typedef __module_private__ int local_typedef; // expected-error{{typedef 'local_typedef' cannot be declared __module_private__}}
  87 }
  88
  89 void param_private(__module_private__ int) {} // expected-error {{parameter '' cannot be declared __module_private}}
  90
  91 // Check struct size
  92 struct LikeVisibleStruct {
  93   int field;
  94   virtual void setField(int f);
  95 };
  96
  97 int check_struct_size[sizeof(VisibleStruct) == sizeof(LikeVisibleStruct)? 1 : -1];