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// RUN: %clang_cc1 -std=c++20 -Wno-unused-value -fsyntax-only -verify %s
namespace misplaced_capture_default {
void Test() {
int i = 0;
[&, i, &] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
[&, i, = ] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
[=, &i, &] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
[=, &i, = ] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
[i, &] {}; // expected-error {{capture default must be first}}
[i, = ] {}; // expected-error {{capture default must be first}}
[i, = x] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
[=, &i] {}; // ok
[&, &i] {}; // expected-error {{'&' cannot precede a capture when the capture default is '&'}}
[&x = i] {}; // ok
[=, &x = i] {}; // ok
[x = &i] {}; // ok
[=, &x = &i] {}; // expected-error {{non-const lvalue reference to type 'int *' cannot bind to a temporary of type 'int *'}}
[&, this] {}; // expected-error {{'this' cannot be captured in this context}}
[i, &, x = 2] {}; // expected-error {{capture default must be first}}
[i, =, x = 2] {}; // expected-error {{capture default must be first}}
}
} // namespace misplaced_capture_default
namespace misplaced_capture_default_pack {
template <typename... Args> void Test(Args... args) {
[&, args...] {}; // ok
[args..., &] {}; // expected-error {{capture default must be first}}
[=, &args...] {}; // ok
[&, ... xs = &args] {}; // ok
[&, ... xs = &] {}; // expected-error {{expected expression}}
[... xs = &] {}; // expected-error {{expected expression}}
[... xs = &args, = ] {}; // expected-error {{capture default must be first}}
[... xs = &args, &] {}; // expected-error {{capture default must be first}}
}
} // namespace misplaced_capture_default_pack
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