llvm-project/clang/test/SemaCXX/modules-ts.cppm

84 lines
2.3 KiB
C++

// RUN: %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface %s -o %t.pcm -verify -DTEST=0
// RUN: %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface %s -o %t.pcm -verify -Dmodule=int -DTEST=1
// RUN: not %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface %s -fmodule-file=%t.pcm -o %t.pcm -DTEST=2 2>&1 | FileCheck %s --check-prefix=CHECK-2
// RUN: %clang_cc1 -std=c++1z -fmodules-ts -emit-module-interface %s -fmodule-file=%t.pcm -o %t.pcm -verify -Dfoo=bar -DTEST=3
#if TEST == 0
// expected-no-diagnostics
#endif
export module foo;
#if TEST == 1
// FIXME: diagnose export outside of module interface unit
#elif TEST == 2
// CHECK-2: error: redefinition of module 'foo'
#endif
static int m; // ok, internal linkage, so no redefinition error
int n;
#if TEST == 3
// expected-error@-2 {{redefinition of '}}
// expected-note@-3 {{previous}}
#endif
#if TEST == 0
export {
int a;
int b;
constexpr int *p = &n;
}
export int c;
namespace N {
export void f() {}
}
export struct T {} t;
#elif TEST == 3
int use_a = a; // expected-error {{declaration of 'a' must be imported from module 'foo' before it is required}}
// expected-note@-13 {{previous}}
#undef foo
import foo;
export {} // expected-error {{export declaration cannot be empty}}
export { ; }
export { static_assert(true); }
// FIXME: These diagnostics are not very good.
export import foo; // expected-error {{expected unqualified-id}}
export { import foo; } // expected-error {{expected unqualified-id}}
int use_b = b;
int use_n = n; // FIXME: this should not be visible, because it is not exported
extern int n;
static_assert(&n == p); // FIXME: these are not the same entity
#endif
#if TEST == 1
struct S {
export int n; // expected-error {{expected member name or ';'}}
export static int n; // expected-error {{expected member name or ';'}}
};
#endif
// FIXME: Exports of declarations without external linkage are disallowed.
// Exports of declarations with non-external-linkage types are disallowed.
// Cannot export within another export. This isn't precisely covered by the
// language rules right now, but (per personal correspondence between zygoloid
// and gdr) is the intent.
#if TEST == 1
export {
extern "C++" {
namespace NestedExport {
export { // expected-error {{appears within another export}}
int q;
}
}
}
}
#endif