76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
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// RUN: %clang_cc1 -std=c++2a -verify %s
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namespace N {
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struct Q {};
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template<typename> int f(Q);
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template<int> int f(Q);
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template<typename> int g(Q);
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template<int> int g(Q);
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template<int> int some_long_name(Q); // expected-note {{here}}
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}
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N::Q q;
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int g();
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int h();
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template<int> int h(...);
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int h(int);
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// OK, these find the above functions by ADL.
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int a = f<int>(q);
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int b(f<int>(q));
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int c(f<0>(q));
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int d = g<int>(q);
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int e = h<0>(q); // ok, found by unqualified lookup
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void fn() {
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f<0>(q);
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int f;
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f<0>(q); // expected-error {{invalid operands to binary expression}}
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}
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void disambig() {
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// FIXME: It's unclear whether ending the template argument at the > inside the ?: is correct here (see DR579).
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f<true ? 1 > 2 : 3>(q); // expected-error {{expected ':'}} expected-note {{to match}} expected-error {{expected expression}}
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f < 1 + 3 > (q); // ok, function call
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}
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bool typo(int something) { // expected-note 4{{declared here}}
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// FIXME: We shouldn't suggest the N:: for an ADL call if the candidate can be found by ADL.
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some_logn_name<3>(q); // expected-error {{did you mean 'N::some_long_name'?}}
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somethign < 3 ? h() > 4 : h(0); // expected-error {{did you mean 'something'}}
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// This is parsed as a comparison on the left of a ?: expression.
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somethign < 3 ? h() + 4 : h(0); // expected-error {{did you mean 'something'}}
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// This is parsed as an ADL-only template-id call.
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somethign < 3 ? h() + 4 : h(0) >(0); // expected-error {{undeclared identifier 'somethign'}}
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bool k(somethign < 3); // expected-error {{did you mean 'something'}}
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return somethign < 3; // expected-error {{did you mean 'something'}}
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}
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// Ensure that treating undeclared identifiers as template names doesn't cause
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// problems.
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struct W<int> {}; // expected-error {{undeclared template struct 'W'}}
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X<int>::Y xy; // expected-error {{no template named 'X'}}
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void xf(X<int> x); // expected-error {{no template named 'X'}}
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struct A : X<int> { // expected-error {{no template named 'X'}}
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A() : X<int>() {} // expected-error {{no template named 'X'}}
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};
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// Similarly for treating overload sets of functions as template names.
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struct g<int> {}; // expected-error {{'g' refers to a function template}}
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g<int>::Y xy; // expected-error {{no template named 'g'}} FIXME lies
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void xf(g<int> x); // expected-error {{variable has incomplete type 'void'}} expected-error 1+{{}} expected-note {{}}
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struct B : g<int> { // expected-error {{expected class name}}
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B() : g<int>() {} // expected-error {{expected class member or base class name}}
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};
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namespace vector_components {
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typedef __attribute__((__ext_vector_type__(2))) float vector_float2;
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bool foo123(vector_float2 &A, vector_float2 &B)
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{
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return A.x < B.x && B.y > A.y;
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}
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}
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