505956eeb0
We missed the check of diagnose_if attributes for the constructor templates, because we used the template declaration, rather than its templated one. Also, we can avoid the duplicate constraint checking because it's already performed in overload resolution. There are some diagnostic regressions, all of which are warnings for uses of lambdas in C++03 mode, which I believe we should still diagnose. Fixes https://github.com/llvm/llvm-project/issues/160776
174 lines
7.4 KiB
C++
174 lines
7.4 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected,cxx14ext,cxx17ext,cxx20ext,cxx23ext -std=c++03 -Wno-c99-designator %s -Wno-c++11-extensions -Wno-local-type-template-args
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// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected,cxx14ext,cxx17ext,cxx20ext,cxx23ext -std=c++11 -Wno-c99-designator %s
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// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected,cxx17ext,cxx20ext,cxx23ext -std=c++14 -Wno-c99-designator %s
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// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected,cxx20ext,cxx23ext -std=c++17 -Wno-c99-designator %s
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// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected,cxx23ext -std=c++20 -Wno-c99-designator %s
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// RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify=expected -std=c++23 -Wno-c99-designator %s
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enum E { e };
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#if __cplusplus >= 201103L
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constexpr int id(int n) { return n; }
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#endif
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class C {
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int f() {
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int foo, bar;
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[]; // expected-error {{expected body of lambda expression}}
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[+] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[foo+] {}; // expected-error {{expected ',' or ']' in lambda capture list}}
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[foo,&this] {}; // expected-error {{'this' cannot be captured by reference}}
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[&this] {}; // expected-error {{'this' cannot be captured by reference}}
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[&,] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[=,] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[] {};
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[=] (int i) {};
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[&] (int) mutable -> void {};
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[foo,bar] () { return 3; };
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[=,&foo] () {};
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[&,foo] () {};
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[this] () {};
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[] () -> class C { return C(); };
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[] () -> enum E { return e; };
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[] -> int { return 0; }; // cxx23ext-warning {{lambda without a parameter clause is a C++23 extension}}
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[] mutable -> int { return 0; }; // cxx23ext-warning {{is a C++23 extension}}
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[](int) -> {}; // PR13652 expected-error {{expected a type}}
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return 1;
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}
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void designator_or_lambda() {
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typedef int T;
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const int b = 0;
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const int c = 1;
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int d;
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int a1[1] = {[b] (T()) {}}; // expected-error{{no viable conversion from '(lambda}}
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int a2[1] = {[b] = 1 };
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int a3[1] = {[b,c] = 1 }; // expected-error{{expected ']'}} expected-note {{to match}}
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int a4[1] = {[&b] = 1 }; // expected-error{{integral constant expression must have integral or unscoped enumeration type, not 'const int *'}}
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int a5[3] = { []{return 0;}() };
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int a6[1] = {[this] = 1 }; // expected-error{{integral constant expression must have integral or unscoped enumeration type, not 'C *'}}
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int a7[1] = {[d(0)] { return d; } ()}; // cxx14ext-warning {{initialized lambda captures are a C++14 extension}}
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int a8[1] = {[d = 0] { return d; } ()}; // cxx14ext-warning {{initialized lambda captures are a C++14 extension}}
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#if __cplusplus >= 201103L
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int a10[1] = {[id(0)] { return id; } ()}; // cxx14ext-warning {{initialized lambda captures are a C++14 extension}}
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#endif
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int a9[1] = {[d = 0] = 1}; // expected-error{{is not an integral constant expression}}
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#if __cplusplus >= 201402L
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// expected-note@-2{{constant expression cannot modify an object that is visible outside that expression}}
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#endif
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#if __cplusplus >= 201103L
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int a11[1] = {[id(0)] = 1};
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#endif
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}
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void delete_lambda(int *p) {
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delete [] p;
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delete [] (int*) { new int }; // ok, compound-literal, not lambda
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delete [] { return new int; } (); // expected-error {{'[]' after delete interpreted as 'delete[]'}}
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delete [&] { return new int; } (); // ok, lambda
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delete []() { return new int; }(); // expected-error{{'[]' after delete interpreted as 'delete[]'}}
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delete [](E Enum) { return new int((int)Enum); }(e); // expected-error{{'[]' after delete interpreted as 'delete[]'}}
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#if __cplusplus > 201703L
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delete []<int = 0>() { return new int; }(); // expected-error{{'[]' after delete interpreted as 'delete[]'}}
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#endif
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}
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// We support init-captures in C++11 as an extension.
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int z;
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void init_capture() {
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[n(0)] () mutable -> int { return ++n; }; // cxx14ext-warning {{initialized lambda captures are a C++14 extension}}
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[n{0}] { return; }; // cxx14ext-warning {{initialized lambda captures are a C++14 extension}}
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[a([&b = z]{})](){}; // cxx14ext-warning 2 {{initialized lambda captures are a C++14 extension}}
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[n = 0] { return ++n; }; // expected-error {{captured by copy in a non-mutable}}
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// cxx14ext-warning@-1 {{initialized lambda captures are a C++14 extension}}
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[n = {0}] { return; }; // expected-error {{<initializer_list>}}
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// cxx14ext-warning@-1 {{initialized lambda captures are a C++14 extension}}
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int x = 4;
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auto y = [&r = x, x = x + 1]() -> int { // cxx14ext-warning 2 {{initialized lambda captures are a C++14 extension}}
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r += 2;
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return x + 2;
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} ();
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}
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void attributes() {
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[] __attribute__((noreturn)){}; // cxx23ext-warning {{lambda without a parameter clause is a C++23 extension}}
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[]() [[]]
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mutable {}; // expected-error {{expected body of lambda expression}}
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[]() [[]] {};
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[]() [[]] -> void {};
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[]() mutable [[]] -> void {};
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#if __cplusplus >= 201103L
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[]() mutable noexcept [[]] -> void {};
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#endif
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// Testing GNU-style attributes on lambdas -- the attribute is specified
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// before the mutable specifier instead of after (unlike C++11).
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[]() __attribute__((noreturn)) mutable { while(1); };
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[]() mutable
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__attribute__((noreturn)) { while(1); }; // expected-error {{expected body of lambda expression}}
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// Testing support for P2173 on adding attributes to the declaration
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// rather than the type.
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[][[]](){}; // cxx23ext-warning {{an attribute specifier sequence in this position is a C++23 extension}}
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[]<typename>[[]](){}; // cxx20ext-warning {{explicit template parameter list for lambdas is a C++20 extension}}
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// cxx23ext-warning@-1 {{an attribute specifier sequence in this position is a C++23 extension}}
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[][[]]{}; // cxx23ext-warning {{an attribute specifier sequence in this position is a C++23 extension}}
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}
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void missing_parens() {
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[] mutable {}; // cxx23ext-warning {{is a C++23 extension}}
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#if __cplusplus >= 201103L
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[] noexcept {}; // cxx23ext-warning {{is a C++23 extension}}
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#endif
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}
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};
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template <typename>
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void PR22122() {
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[](int) -> {}; // expected-error {{expected a type}}
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}
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template void PR22122<int>();
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namespace PR42778 {
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struct A {
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template <class F> A(F&&) {}
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};
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struct S {
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void mf() { A(([*this]{})); } // cxx17ext-warning {{'*this' by copy is a C++17 extension}}
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};
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}
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struct S {
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template <typename T>
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void m (T x =[0); // expected-error{{expected variable name or 'this' in lambda capture list}}
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} s;
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struct U {
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template <typename T>
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void m_fn1(T x = 0[0); // expected-error{{expected ']'}} expected-note{{to match this '['}}
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} *U;
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namespace GH63880{
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void f() {
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char* i(*[] { return new int; }());
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// expected-error@-1{{cannot initialize a variable of type 'char *' with an lvalue of type 'int'}}
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char* j(&[]() -> int& { return *new int; }());
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//expected-error@-1{{cannot initialize a variable of type 'char *' with an rvalue of type 'int *'}}
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}
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}
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