clang/test/CodeGenCXX/dllstorage-visibility.cpp

   1 /// dllimport and dllexport express non-hidden intention. Don't apply hidden visibility.
   2
   3 // RUN: %clang_cc1 -emit-llvm -triple x86_64-windows-msvc -fdeclspec -fvisibility-inlines-hidden -o - %s | FileCheck %s --check-prefix=MSVC
   4 // RUN: %clang_cc1 -emit-llvm -triple x86_64-windows-gnu -fdeclspec -fvisibility-inlines-hidden -o - %s | FileCheck %s --check-prefix=GNU
   5 // RUN: %clang_cc1 -emit-llvm -triple x86_64-windows-gnu -fdeclspec -fvisibility=hidden -o - %s | FileCheck %s --check-prefix=GNU
   6
   7 // RUN: %clang_cc1 -emit-llvm-only -verify -triple x86_64-windows-gnu -fdeclspec -DERR1 -o - %s
   8 // RUN: %clang_cc1 -emit-llvm-only -verify -triple x86_64-windows-gnu -fdeclspec -fvisibility=hidden -DERR1 -o - %s
   9 // RUN: %clang_cc1 -emit-llvm-only -verify -triple x86_64-windows-gnu -fdeclspec -DERR2 -o - %s
  10 // RUN: %clang_cc1 -emit-llvm-only -verify -triple x86_64-windows-gnu -fdeclspec -DERR3 -o - %s
  11
  12 #define CONCAT2(x, y) x##y
  13 #define CONCAT(x, y) CONCAT2(x, y)
  14 #define USE(func) void CONCAT(use, __LINE__)() { func(); }
  15
  16 #define HIDDEN __attribute__((visibility("hidden")))
  17 #define PROTECTED __attribute__((visibility("protected")))
  18 #define DEFAULT __attribute__((visibility("default")))
  19
  20 // MSVC-DAG: declare dllimport void @"?bar@foo@@QEAAXXZ"(
  21 // GNU-DAG: define linkonce_odr hidden void @_ZN3foo3barEv(
  22
  23 struct __attribute__((dllimport)) foo {
  24   void bar() {}
  25 };
  26 void zed(foo *p) { p->bar(); }
  27
  28 // MSVC-DAG: define dso_local dllexport void @"?exported@@YAXXZ"(
  29 // GNU-DAG: define dso_local dllexport void @_Z8exportedv(
  30 __attribute__((dllexport)) void exported() {}
  31
  32 // MSVC-DAG: define weak_odr dso_local dllexport void @"?exported_inline@@YAXXZ"(
  33 // GNU-DAG: define weak_odr dso_local dllexport void @_Z15exported_inlinev(
  34 __declspec(dllexport) inline void exported_inline() {}
  35 USE(exported_inline)
  36
  37 __attribute__((dllexport)) DEFAULT void exported_default() {}
  38
  39 // MSVC-DAG: define protected dllexport void @"?exported_protected@@YAXXZ"(
  40 // GNU-DAG: define protected dllexport void @_Z18exported_protectedv(
  41 #pragma GCC visibility push(protected)
  42 __attribute__((dllexport)) void exported_protected() {}
  43 #pragma GCC visibility pop
  44
  45 #if defined(ERR1)
  46 // expected-error@+1 {{non-default visibility cannot be applied to 'dllimport' declaration}}
  47 __attribute__((dllimport)) HIDDEN void imported_hidden();
  48
  49 // expected-error@+1 {{hidden visibility cannot be applied to 'dllexport' declaration}}
  50 __attribute__((dllexport)) HIDDEN void exported_hidden() { imported_hidden(); }
  51
  52 #elif defined(ERR2)
  53 // expected-error@+1 {{non-default visibility cannot be applied to 'dllimport' declaration}}
  54 __attribute__((dllimport)) PROTECTED void imported_protected();
  55
  56 void foo() { imported_protected(); }
  57
  58 #elif defined(ERR3)
  59 struct HIDDEN C2 {
  60   // expected-error@+1 {{hidden visibility cannot be applied to 'dllexport' declaration}}
  61   __attribute__((dllexport)) void exported_hidden() {}
  62 };
  63 #endif