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// P0806R2
// { dg-do compile { target c++17 } }
// { dg-options "-pedantic" }
struct X {
int x;
void foo (int n) {
auto a1 = [=] { x = n; }; // { dg-bogus "implicit capture" "" { target c++17_down } }
// { dg-warning "implicit capture of 'this' via '\\\[=\\\]' is deprecated" "" { target c++20 } .-1 }
// { dg-message "add explicit 'this' or '\\\*this' capture" "" { target c++20 } .-2 }
auto a2 = [=, this] { x = n; };
// { dg-warning "explicit by-copy capture" "" { target c++17_down } .-1 }
auto a3 = [=, *this]() mutable { x = n; };
auto a4 = [&] { x = n; };
auto a5 = [&, this] { x = n; };
auto a6 = [&, *this]() mutable { x = n; };
auto a7 = [=] { // { dg-bogus "implicit capture" "" { target c++17_down } }
// { dg-warning "implicit capture of 'this' via '\\\[=\\\]' is deprecated" "" { target c++20 } .-1 }
// { dg-message "add explicit 'this' or '\\\*this' capture" "" { target c++20 } .-2 }
auto a = [=] { // { dg-bogus "implicit capture" "" { target c++17_down } }
// { dg-warning "implicit capture of 'this' via '\\\[=\\\]' is deprecated" "" { target c++20 } .-1 }
// { dg-message "add explicit 'this' or '\\\*this' capture" "" { target c++20 } .-2 }
auto a2 = [=] { x = n; }; // { dg-bogus "implicit capture" "" { target c++17_down } }
// { dg-warning "implicit capture of 'this' via '\\\[=\\\]' is deprecated" "" { target c++20 } .-1 }
// { dg-message "add explicit 'this' or '\\\*this' capture" "" { target c++20 } .-2 }
};
};
auto a8 = [=, this] {
// { dg-warning "explicit by-copy capture" "" { target c++17_down } .-1 }
auto a = [=, this] {
// { dg-warning "explicit by-copy capture" "" { target c++17_down } .-1 }
auto a2 = [=, this] { x = n; };
// { dg-warning "explicit by-copy capture" "" { target c++17_down } .-1 }
};
};
auto a9 = [=, *this]() mutable {
auto a = [=, *this]() mutable {
auto a2 = [=, *this]() mutable { x = n; };
};
};
auto a10 = [&] {
auto a = [&] {
auto a2 = [&] { x = n; };
};
};
auto a11 = [&, this] {
auto a = [&, this] {
auto a2 = [&, this] { x = n; };
};
};
auto a12 = [&, *this]() mutable {
auto a = [&, *this]() mutable {
auto a2 = [&, *this]() mutable { x = n; };
};
};
}
};
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