39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
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// Test parsing + semantic analysis
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template<typename ...Types> struct count_types {
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static const unsigned value = sizeof...(Types);
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};
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template<int ...Values> struct count_ints {
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static const unsigned value = sizeof...(Values);
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};
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// Test instantiation
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int check_types[count_types<short, int, long>::value == 3? 1 : -1];
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int check_ints[count_ints<1, 2, 3, 4, 5>::value == 5? 1 : -1];
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// Test instantiation involving function parameter packs.
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struct any {
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template<typename T> any(T);
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};
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template<typename ...Inits>
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void init_me(Inits ...inits) {
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any array[sizeof...(inits)] = { inits... };
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}
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template void init_me<int, float, double*>(int, float, double*);
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// Test parser and semantic recovery.
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template<int Value> struct count_ints_2 {
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static const unsigned value = sizeof...(Value); // expected-error{{'Value' does not refer to the name of a parameter pack}}
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};
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template<typename ...Types> // expected-note{{parameter pack 'Types' declared here}}
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struct count_types_2 {
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static const unsigned value = sizeof... Type; // expected-error{{missing parentheses around the size of parameter pack 'Type'}} \
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// expected-error{{Type' does not refer to the name of a parameter pack; did you mean 'Types'?}}
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};
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