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1 // RUN: %clang_cc1 -fsyntax-only -verify %s
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2
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3 template <int N>
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4 void f0(int (&array)[N]); // expected-note {{candidate template ignored: could not match 'int' against 'char'}}
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5
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6 // Simple function template specialization (using overloading)
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7 template<> void f0(int (&array)[1]);
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8
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9 void test_f0() {
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10 int iarr1[1];
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11 f0(iarr1);
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12 }
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13
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14 // Function template specialization where there are no matches
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15 template<> void f0(char (&array)[1]); // expected-error{{no function template matches}}
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16 template<> void f0<2>(int (&array)[2]) { }
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17
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18 // Function template specialization that requires partial ordering
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19 template<typename T, int N> void f1(T (&array)[N]); // expected-note{{matches}}
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20 template<int N> void f1(int (&array)[N]); // expected-note{{matches}}
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21
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22 template<> void f1(float (&array)[1]);
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23 template<> void f1(int (&array)[1]);
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24
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25 // Function template specialization that results in an ambiguity
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26 template<typename T> void f1(T (&array)[17]); // expected-note{{matches}}
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27 template<> void f1(int (&array)[17]); // expected-error{{ambiguous}}
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28
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29 // Resolving that ambiguity with explicitly-specified template arguments.
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30 template<int N> void f2(double (&array)[N]);
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31 template<typename T> void f2(T (&array)[42]);
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32
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33 template<> void f2<double>(double (&array)[42]);
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34 template<> void f2<42>(double (&array)[42]);
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35
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36 void f2<25>(double (&array)[25]); // expected-error{{specialization}}
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37
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38 // PR5833
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39 namespace PR5833 {
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40 template <typename T> bool f0(T &t1);
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41 template <> bool f0<float>(float &t1);
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42 }
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43 template <> bool PR5833::f0<float>(float &t1) {}
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44
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45 // PR8295
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46 namespace PR8295 {
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47 template <typename T> void f(T t) {}
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48 template <typename T> void f<T*>(T* t) {} // expected-error{{function template partial specialization is not allowed}}
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49 }
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50
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51 class Foo {
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52 template<class T>
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53 static void Bar(const T& input);
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54
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55 // Don't crash here.
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56 template<>
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57 static void Bar(const long& input) {} // expected-warning{{explicit specialization cannot have a storage class}}
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58 };
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