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Diffstat (limited to 'clang/test/SemaTemplate/function-template-specialization.cpp')
-rw-r--r-- | clang/test/SemaTemplate/function-template-specialization.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/clang/test/SemaTemplate/function-template-specialization.cpp b/clang/test/SemaTemplate/function-template-specialization.cpp new file mode 100644 index 0000000..a0d41b2 --- /dev/null +++ b/clang/test/SemaTemplate/function-template-specialization.cpp @@ -0,0 +1,48 @@ +// RUN: %clang_cc1 -fsyntax-only -verify %s + +template<int N> void f0(int (&array)[N]); + +// Simple function template specialization (using overloading) +template<> void f0(int (&array)[1]); + +void test_f0() { + int iarr1[1]; + f0(iarr1); +} + +// Function template specialization where there are no matches +template<> void f0(char (&array)[1]); // expected-error{{no function template matches}} +template<> void f0<2>(int (&array)[2]) { } + +// Function template specialization that requires partial ordering +template<typename T, int N> void f1(T (&array)[N]); // expected-note{{matches}} +template<int N> void f1(int (&array)[N]); // expected-note{{matches}} + +template<> void f1(float (&array)[1]); +template<> void f1(int (&array)[1]); + +// Function template specialization that results in an ambiguity +template<typename T> void f1(T (&array)[17]); // expected-note{{matches}} +template<> void f1(int (&array)[17]); // expected-error{{ambiguous}} + +// Resolving that ambiguity with explicitly-specified template arguments. +template<int N> void f2(double (&array)[N]); +template<typename T> void f2(T (&array)[42]); + +template<> void f2<double>(double (&array)[42]); +template<> void f2<42>(double (&array)[42]); + +void f2<25>(double (&array)[25]); // expected-error{{specialization}} + +// PR5833 +namespace PR5833 { + template <typename T> bool f0(T &t1); + template <> bool f0<float>(float &t1); +} +template <> bool PR5833::f0<float>(float &t1) {} + +// PR8295 +namespace PR8295 { + template <typename T> void f(T t) {} + template <typename T> void f<T*>(T* t) {} // expected-error{{function template partial specialization is not allowed}} +} |