forked from OSchip/llvm-project
159 lines
7.6 KiB
C++
159 lines
7.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 -Wundefined-func-template %s
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#if !defined(INCLUDE)
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template <class T> struct C1 {
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static char s_var_1; // expected-note{{forward declaration of template entity is here}}
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static char s_var_2; // expected-note{{forward declaration of template entity is here}}
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static void s_func_1(); // expected-note{{forward declaration of template entity is here}}
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static void s_func_2(); // expected-note{{forward declaration of template entity is here}}
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void meth_1(); // expected-note2{{forward declaration of template entity is here}}
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void meth_2();
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template <class T1> static char s_tvar_2; // expected-note{{forward declaration of template entity is here}}
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template <class T1> static void s_tfunc_2(); // expected-note{{forward declaration of template entity is here}}
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template<typename T1> struct C2 {
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static char s_var_2; // expected-note{{forward declaration of template entity is here}}
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static void s_func_2(); // expected-note{{forward declaration of template entity is here}}
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void meth_2(); // expected-note{{forward declaration of template entity is here}}
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template <class T2> static char s_tvar_2; // expected-note{{forward declaration of template entity is here}}
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template <class T2> void tmeth_2(); // expected-note{{forward declaration of template entity is here}}
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};
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};
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extern template char C1<int>::s_var_2;
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extern template void C1<int>::s_func_2();
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extern template void C1<int>::meth_2();
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extern template char C1<int>::s_tvar_2<char>;
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extern template void C1<int>::s_tfunc_2<char>();
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extern template void C1<int>::C2<long>::s_var_2;
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extern template void C1<int>::C2<long>::s_func_2();
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extern template void C1<int>::C2<long>::meth_2();
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extern template char C1<int>::C2<long>::s_tvar_2<char>;
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extern template void C1<int>::C2<long>::tmeth_2<char>();
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char func_01() {
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return C1<int>::s_var_2;
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}
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char func_02() {
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return C1<int>::s_var_1; // expected-warning{{instantiation of variable 'C1<int>::s_var_1' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_var_1' is explicitly instantiated in another translation unit}}
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}
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char func_03() {
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return C1<char>::s_var_2; // expected-warning{{instantiation of variable 'C1<char>::s_var_2' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::s_var_2' is explicitly instantiated in another translation unit}}
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}
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void func_04() {
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C1<int>::s_func_1(); // expected-warning{{instantiation of function 'C1<int>::s_func_1' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_func_1' is explicitly instantiated in another translation unit}}
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}
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void func_05() {
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C1<int>::s_func_2();
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}
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void func_06() {
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C1<char>::s_func_2(); // expected-warning{{instantiation of function 'C1<char>::s_func_2' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::s_func_2' is explicitly instantiated in another translation unit}}
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}
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void func_07(C1<int> *x) {
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x->meth_1(); // expected-warning{{instantiation of function 'C1<int>::meth_1' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::meth_1' is explicitly instantiated in another translation unit}}
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}
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void func_08(C1<int> *x) {
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x->meth_2();
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}
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void func_09(C1<char> *x) {
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x->meth_1(); // expected-warning{{instantiation of function 'C1<char>::meth_1' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::meth_1' is explicitly instantiated in another translation unit}}
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}
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char func_10() {
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return C1<int>::s_tvar_2<char>;
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}
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char func_11() {
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return C1<int>::s_tvar_2<long>; // expected-warning{{instantiation of variable 'C1<int>::s_tvar_2<long>' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_tvar_2<long>' is explicitly instantiated in another translation unit}}
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}
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void func_12() {
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C1<int>::s_tfunc_2<char>();
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}
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void func_13() {
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C1<int>::s_tfunc_2<long>(); // expected-warning{{instantiation of function 'C1<int>::s_tfunc_2<long>' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_tfunc_2<long>' is explicitly instantiated in another translation unit}}
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}
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char func_14() {
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return C1<int>::C2<long>::s_var_2;
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}
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char func_15() {
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return C1<int>::C2<char>::s_var_2; //expected-warning {{instantiation of variable 'C1<int>::C2<char>::s_var_2' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::s_var_2' is explicitly instantiated in another translation unit}}
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}
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void func_16() {
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C1<int>::C2<long>::s_func_2();
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}
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void func_17() {
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C1<int>::C2<char>::s_func_2(); // expected-warning{{instantiation of function 'C1<int>::C2<char>::s_func_2' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::s_func_2' is explicitly instantiated in another translation unit}}
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}
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void func_18(C1<int>::C2<long> *x) {
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x->meth_2();
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}
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void func_19(C1<int>::C2<char> *x) {
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x->meth_2(); // expected-warning{{instantiation of function 'C1<int>::C2<char>::meth_2' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::meth_2' is explicitly instantiated in another translation unit}}
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}
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char func_20() {
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return C1<int>::C2<long>::s_tvar_2<char>;
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}
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char func_21() {
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return C1<int>::C2<long>::s_tvar_2<long>; // expected-warning{{instantiation of variable 'C1<int>::C2<long>::s_tvar_2<long>' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<long>::s_tvar_2<long>' is explicitly instantiated in another translation unit}}
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}
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void func_22(C1<int>::C2<long> *x) {
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x->tmeth_2<char>();
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}
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void func_23(C1<int>::C2<long> *x) {
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x->tmeth_2<int>(); // expected-warning{{instantiation of function 'C1<int>::C2<long>::tmeth_2<int>' required here, but no definition is available}}
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// expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<long>::tmeth_2<int>' is explicitly instantiated in another translation unit}}
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}
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namespace test_24 {
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template <typename T> struct X {
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friend void g(int);
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operator int() { return 0; }
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};
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void h(X<int> x) { g(x); } // no warning for use of 'g' despite the declaration having been instantiated from a template
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}
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#define INCLUDE
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#include "undefined-template.cpp"
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void func_25(SystemHeader<char> *x) {
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x->meth();
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}
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int main() {
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return 0;
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}
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#else
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#pragma clang system_header
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template <typename T> struct SystemHeader { T meth(); };
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#endif
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