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80 lines
3.1 KiB
80 lines
3.1 KiB
4 months ago
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// RUN: %clang_cc1 -std=c++11 -fsyntax-only -fcxx-exceptions -fexceptions -verify %s
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// When it is part of a parameter-declaration-clause, the parameter
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// pack is a function parameter pack.
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template<typename ...Types>
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void f0(Types ...args);
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template<typename ...Types>
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void f1(const Types &...args);
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// [ Note: Otherwise, the parameter-declaration is part of a
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// template-parameter-list and the parameter pack is a template
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// parameter pack; see 14.1. -- end note ]
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template<int ...N>
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struct X0 { };
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template<typename ...Types>
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struct X1 {
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template<Types ...Values> struct Inner;
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};
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// A declarator-id or abstract-declarator containing an ellipsis shall
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// only be used in a parameter-declaration.
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int (...f2)(int); // expected-error{{only function and template parameters can be parameter packs}}
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void f3() {
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int ...x; // expected-error{{only function and template parameters can be parameter packs}}
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if (int ...y = 17) { } // expected-error{{only function and template parameters can be parameter packs}}
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for (int ...z = 0; z < 10; ++z) { } // expected-error{{only function and template parameters can be parameter packs}}
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try {
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} catch (int ...e) { // expected-error{{only function and template parameters can be parameter packs}}
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}
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}
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template<typename ...Types>
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struct X2 {
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Types ...members; // expected-error{{only function and template parameters can be parameter packs}} \
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// expected-error{{data member type contains unexpanded parameter pack}}
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};
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// The type T of the declarator-id of the function parameter pack
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// shall contain a template parameter pack; each template parameter
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// pack in T is expanded by the function parameter pack.
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template<typename T>
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void f4(T ...args); // expected-error{{type 'T' of function parameter pack does not contain any unexpanded parameter packs}}
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void f4i(int ... x); // expected-error{{type 'int' of function parameter pack does not contain any unexpanded parameter packs}}
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void f4i0(int ...);
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namespace array_type {
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template<typename T>
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void a(T[] ... x); // expected-error{{expected ')'}} expected-note{{to match this '('}}
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template<typename T>
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void b(T[] ...);
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template<typename T>
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void c(T ... []); // expected-error{{type 'T []' of function parameter pack does not contain any unexpanded parameter packs}}
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template<typename T>
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void d(T ... x[]); // expected-error{{type 'T []' of function parameter pack does not contain any unexpanded parameter packs}}
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void ai(int[] ... x); // expected-error{{expected ')'}} expected-note{{to match this '('}}
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void bi(int[] ...);
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void ci(int ... []); // expected-error{{type 'int []' of function parameter pack does not contain any unexpanded parameter packs}}
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void di(int ... x[]); // expected-error{{type 'int []' of function parameter pack does not contain any unexpanded parameter packs}}
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}
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void f5a(auto fp(int)->unk ...) {} // expected-error{{unknown type name 'unk'}}
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void f5b(auto fp(int)->auto ...) {} // expected-error{{'auto' not allowed in function return type}}
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void f5c(auto fp()->...) {} // expected-error{{expected a type}}
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// FIXME: Expand for function and member pointer types.
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