forked from OSchip/llvm-project
172 lines
4.0 KiB
C++
172 lines
4.0 KiB
C++
// No PCH:
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// RUN: %clang_cc1 -pedantic -std=c++1y -include %s -include %s -verify %s -DNONPCH
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// RUN: %clang_cc1 -pedantic -std=c++1y -include %s -include %s -verify %s -DNONPCH -DERROR
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//
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// With PCH:
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// RUN: %clang_cc1 -pedantic -std=c++1y -emit-pch %s -o %t.a -DHEADER1
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// RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.a -emit-pch %s -o %t.b -DHEADER2
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// RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.b -verify %s -DHEADERUSE
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#ifndef ERROR
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// expected-no-diagnostics
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#endif
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#ifdef NONPCH
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#if !defined(HEADER1)
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#define HEADER1
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#undef HEADER2
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#undef HEADERUSE
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#elif !defined(HEADER2)
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#define HEADER2
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#undef HEADERUSE
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#else
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#define HEADERUSE
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#undef HEADER1
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#undef HEADER2
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#endif
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#endif
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// *** HEADER1: First header file
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#if defined(HEADER1) && !defined(HEADER2) && !defined(HEADERUSE)
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template<typename T> T var0a = T();
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template<typename T> extern T var0b;
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namespace join {
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template<typename T> T va = T(100);
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template<typename T> extern T vb;
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namespace diff_types {
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#ifdef ERROR
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template<typename T> extern float err0;
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template<typename T> extern T err1;
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#endif
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template<typename T> extern T def;
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}
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}
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namespace spec {
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template<typename T> constexpr T va = T(10);
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template<> constexpr float va<float> = 1.5;
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template constexpr int va<int>;
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template<typename T> T vb = T();
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template<> constexpr float vb<float> = 1.5;
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template<typename T> T vc = T();
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template<typename T> constexpr T vd = T(10);
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template<typename T> T* vd<T*> = new T();
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}
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namespace spec_join1 {
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template<typename T> T va = T(10);
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template<> extern float va<float>;
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extern template int va<int>;
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template<typename T> T vb = T(10);
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template<> extern float vb<float>;
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template<typename T> T vc = T(10);
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template<typename T> T vd = T(10);
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template<typename T> extern T* vd<T*>;
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}
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#endif
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// *** HEADER2: Second header file -- including HEADER1
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#if defined(HEADER2) && !defined(HEADERUSE)
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namespace join {
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template<typename T> extern T va;
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template<> constexpr float va<float> = 2.5;
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template<typename T> T vb = T(100);
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namespace diff_types {
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#ifdef ERROR
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template<typename T> extern T err0; // expected-error {{redeclaration of 'err0' with a different type: 'T' vs 'float'}} // expected-note@42 {{previous declaration is here}}
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template<typename T> extern float err1; // expected-error {{redeclaration of 'err1' with a different type: 'float' vs 'T'}} // expected-note@43 {{previous declaration is here}}
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#endif
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template<typename T> extern T def;
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}
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}
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namespace spec_join1 {
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template<typename T> extern T va;
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template<> float va<float> = 1.5;
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extern template int va<int>;
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template<> float vb<float> = 1.5;
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template int vb<int>;
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template<> float vc<float> = 1.5;
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template int vc<int>;
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template<typename T> extern T vd;
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template<typename T> T* vd<T*> = new T();
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}
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#endif
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// *** HEADERUSE: File using both header files -- including HEADER2
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#ifdef HEADERUSE
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template int var0a<int>;
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float fvara = var0a<float>;
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template<typename T> extern T var0a;
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template<typename T> T var0b = T();
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template int var0b<int>;
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float fvarb = var0b<float>;
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namespace join {
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template const int va<const int>;
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template<> const int va<int> = 50;
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static_assert(va<float> == 2.5, "");
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static_assert(va<int> == 50, "");
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template<> constexpr float vb<float> = 2.5;
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template const int vb<const int>;
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static_assert(vb<float> == 2.5, "");
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static_assert(vb<const int> == 100, "");
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namespace diff_types {
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template<typename T> T def = T();
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}
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}
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namespace spec {
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static_assert(va<float> == 1.5, "");
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static_assert(va<int> == 10, "");
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template<typename T> T* vb<T*> = new T();
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int* intpb = vb<int*>;
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static_assert(vb<float> == 1.5, "");
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template<typename T> T* vc<T*> = new T();
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template<> constexpr float vc<float> = 1.5;
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int* intpc = vc<int*>;
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static_assert(vc<float> == 1.5, "");
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char* intpd = vd<char*>;
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}
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namespace spec_join1 {
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template int va<int>;
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int a = va<int>;
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template<typename T> extern T vb;
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int b = vb<int>;
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int* intpb = vd<int*>;
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}
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#endif
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