forked from OSchip/llvm-project
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
// RUN: %clang_cc1 -std=c++2a -verify %s -pedantic
|
|
|
|
template<typename T> struct Template {};
|
|
|
|
struct Linkage1 { struct Inner {}; };
|
|
typedef struct { struct Inner {}; } Linkage2;
|
|
|
|
typedef struct {} const NoLinkage1;
|
|
auto x = [] {};
|
|
typedef decltype(x) NoLinkage2;
|
|
auto f() { return [] {}; }
|
|
typedef decltype(f()) NoLinkage3;
|
|
|
|
inline auto g() { return [] {}; }
|
|
typedef decltype(g()) VisibleNoLinkage1;
|
|
inline auto y = [] {};
|
|
typedef decltype(y) VisibleNoLinkage2;
|
|
inline auto h() { struct {} x; return x; }
|
|
typedef decltype(h()) VisibleNoLinkage3;
|
|
|
|
extern Linkage1 linkage1v;
|
|
extern Linkage1::Inner linkage1iv;
|
|
extern Linkage2 linkage2v;
|
|
extern Linkage2::Inner linkage2iv;
|
|
extern Template<Linkage1> linkaget1v;
|
|
extern Linkage1 linkage1f();
|
|
void linkage2f(Linkage2);
|
|
|
|
void use_linkage() {
|
|
&linkage1v, &linkage1iv, &linkage2v, &linkage2iv, &linkaget1v; // expected-warning 5{{unused}}
|
|
linkage1f();
|
|
linkage2f({});
|
|
}
|
|
|
|
extern NoLinkage1 no_linkage1(); // expected-error {{function 'no_linkage1' is used but not defined in this translation unit}}
|
|
extern NoLinkage2 no_linkage2(); // expected-error {{function 'no_linkage2' is used but not defined in this translation unit}}
|
|
extern NoLinkage3 no_linkage3(); // expected-error {{function 'no_linkage3' is used but not defined in this translation unit}}
|
|
|
|
void use_no_linkage() {
|
|
no_linkage1(); // expected-note {{used here}}
|
|
no_linkage2(); // expected-note {{used here}}
|
|
no_linkage3(); // expected-note {{used here}}
|
|
}
|
|
|
|
extern VisibleNoLinkage1 visible_no_linkage1(); // expected-warning {{ISO C++ requires a definition}}
|
|
extern VisibleNoLinkage2 visible_no_linkage2(); // expected-warning {{ISO C++ requires a definition}}
|
|
extern VisibleNoLinkage3 visible_no_linkage3(); // expected-warning {{ISO C++ requires a definition}}
|
|
|
|
void use_visible_no_linkage() {
|
|
visible_no_linkage1(); // expected-note {{used here}}
|
|
visible_no_linkage2(); // expected-note {{used here}}
|
|
visible_no_linkage3(); // expected-note {{used here}}
|
|
}
|
|
|
|
namespace {
|
|
struct InternalLinkage {};
|
|
}
|
|
InternalLinkage internal_linkage(); // expected-error {{used but not defined}}
|
|
void use_internal_linkage() {
|
|
internal_linkage(); // expected-note {{used here}}
|
|
}
|
|
|
|
extern inline int not_defined; // expected-error {{not defined}}
|
|
extern inline int defined_after_use;
|
|
void use_inline_vars() {
|
|
not_defined = 1; // expected-note {{used here}}
|
|
defined_after_use = 2;
|
|
}
|
|
inline int defined_after_use;
|
|
|
|
namespace {
|
|
template<typename T> struct A {
|
|
static const int n;
|
|
};
|
|
template<typename T> const int A<T>::n = 3;
|
|
static_assert(A<int>::n == 3);
|
|
int k = A<float>::n;
|
|
}
|