| 1 | // RUN: %clang_cc1 -fsyntax-only -Wno-unused-value -verify -std=c++11 %s |
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| 2 | |
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| 3 | enum E { e }; |
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| 4 | |
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| 5 | constexpr int id(int n) { return n; } |
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| 6 | |
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| 7 | class C { |
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| 8 | |
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| 9 | int f() { |
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| 10 | int foo, bar; |
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| 11 | |
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| 12 | []; // expected-error {{expected body of lambda expression}} |
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| 13 | [+] {}; // expected-error {{expected variable name or 'this' in lambda capture list}} |
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| 14 | [foo+] {}; // expected-error {{expected ',' or ']' in lambda capture list}} |
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| 15 | [foo,&this] {}; // expected-error {{'this' cannot be captured by reference}} |
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| 16 | [&this] {}; // expected-error {{'this' cannot be captured by reference}} |
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| 17 | [&,] {}; // expected-error {{expected variable name or 'this' in lambda capture list}} |
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| 18 | [=,] {}; // expected-error {{expected variable name or 'this' in lambda capture list}} |
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| 19 | [] {}; |
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| 20 | [=] (int i) {}; |
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| 21 | [&] (int) mutable -> void {}; |
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| 22 | [foo,bar] () { return 3; }; |
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| 23 | [=,&foo] () {}; |
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| 24 | [&,foo] () {}; |
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| 25 | [this] () {}; |
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| 26 | [] () -> class C { return C(); }; |
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| 27 | [] () -> enum E { return e; }; |
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| 28 | |
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| 29 | [] -> int { return 0; }; // expected-error{{lambda requires '()' before return type}} |
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| 30 | [] mutable -> int { return 0; }; // expected-error{{lambda requires '()' before 'mutable'}} |
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| 31 | [](int) -> {}; // PR13652 expected-error {{expected a type}} |
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| 32 | return 1; |
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| 33 | } |
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| 34 | |
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| 35 | void designator_or_lambda() { |
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| 36 | typedef int T; |
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| 37 | const int b = 0; |
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| 38 | const int c = 1; |
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| 39 | int d; |
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| 40 | int a1[1] = {[b] (T()) {}}; // expected-error{{no viable conversion from '(lambda}} |
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| 41 | int a2[1] = {[b] = 1 }; |
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| 42 | int a3[1] = {[b,c] = 1 }; // expected-error{{expected ']'}} expected-note {{to match}} |
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| 43 | int a4[1] = {[&b] = 1 }; // expected-error{{integral constant expression must have integral or unscoped enumeration type, not 'const int *'}} |
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| 44 | int a5[3] = { []{return 0;}() }; |
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| 45 | int a6[1] = {[this] = 1 }; // expected-error{{integral constant expression must have integral or unscoped enumeration type, not 'C *'}} |
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| 46 | int a7[1] = {[d(0)] { return d; } ()}; // expected-warning{{extension}} |
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| 47 | int a8[1] = {[d = 0] { return d; } ()}; // expected-warning{{extension}} |
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| 48 | int a9[1] = {[d = 0] = 1}; // expected-error{{is not an integral constant expression}} |
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| 49 | int a10[1] = {[id(0)] { return id; } ()}; // expected-warning{{extension}} |
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| 50 | int a11[1] = {[id(0)] = 1}; |
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| 51 | } |
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| 52 | |
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| 53 | void delete_lambda(int *p) { |
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| 54 | delete [] p; |
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| 55 | delete [] (int*) { new int }; // ok, compound-literal, not lambda |
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| 56 | delete [] { return new int; } (); // expected-error{{expected expression}} |
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| 57 | delete [&] { return new int; } (); // ok, lambda |
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| 58 | } |
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| 59 | |
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| 60 | // We support init-captures in C++11 as an extension. |
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| 61 | int z; |
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| 62 | void init_capture() { |
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| 63 | [n(0)] () mutable -> int { return ++n; }; // expected-warning{{extension}} |
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| 64 | [n{0}] { return; }; // expected-warning{{extension}} |
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| 65 | [n = 0] { return ++n; }; // expected-error {{captured by copy in a non-mutable}} expected-warning{{extension}} |
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| 66 | [n = {0}] { return; }; // expected-error {{<initializer_list>}} expected-warning{{extension}} |
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| 67 | [a([&b = z]{})](){}; // expected-warning 2{{extension}} |
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| 68 | |
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| 69 | int x = 4; |
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| 70 | auto y = [&r = x, x = x + 1]() -> int { // expected-warning 2{{extension}} |
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| 71 | r += 2; |
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| 72 | return x + 2; |
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| 73 | } (); |
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| 74 | } |
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| 75 | |
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| 76 | void attributes() { |
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| 77 | [] [[]] {}; // expected-error {{lambda requires '()' before attribute specifier}} |
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| 78 | [] __attribute__((noreturn)) {}; // expected-error {{lambda requires '()' before attribute specifier}} |
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| 79 | []() [[]] |
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| 80 | mutable {}; // expected-error {{expected body of lambda expression}} |
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| 81 | |
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| 82 | []() [[]] {}; |
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| 83 | []() [[]] -> void {}; |
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| 84 | []() mutable [[]] -> void {}; |
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| 85 | []() mutable noexcept [[]] -> void {}; |
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| 86 | |
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| 87 | // Testing GNU-style attributes on lambdas -- the attribute is specified |
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| 88 | // before the mutable specifier instead of after (unlike C++11). |
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| 89 | []() __attribute__((noreturn)) mutable { while(1); }; |
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| 90 | []() mutable |
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| 91 | __attribute__((noreturn)) { while(1); }; // expected-error {{expected body of lambda expression}} |
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| 92 | } |
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| 93 | }; |
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| 94 | |
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| 95 | template <typename> |
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| 96 | void PR22122() { |
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| 97 | [](int) -> {}; // expected-error {{expected a type}} |
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| 98 | } |
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| 99 | |
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| 100 | template void PR22122<int>(); |
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| 101 | |
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| 102 | struct S { |
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| 103 | template <typename T> |
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| 104 | void m (T x =[0); // expected-error{{expected variable name or 'this' in lambda capture list}} |
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| 105 | } s; |
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| 106 | |
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| 107 | struct U { |
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| 108 | template <typename T> |
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| 109 | void m_fn1(T x = 0[0); // expected-error{{expected ']'}} expected-note{{to match this '['}} |
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| 110 | } *U; |
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| 111 | |
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