derek.holloway
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48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
// RUN: %clang_cc1 -std=c++20 -Wno-unused-value -fsyntax-only -verify %s
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namespace misplaced_capture_default {
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void Test() {
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int i = 0;
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[&, i, &] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[&, i, = ] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[=, &i, &] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[=, &i, = ] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[i, &] {}; // expected-error {{capture default must be first}}
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[i, = ] {}; // expected-error {{capture default must be first}}
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[i, = x] {}; // expected-error {{expected variable name or 'this' in lambda capture list}}
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[=, &i] {}; // ok
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[&, &i] {}; // expected-error {{'&' cannot precede a capture when the capture default is '&'}}
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[&x = i] {}; // ok
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[=, &x = i] {}; // ok
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[x = &i] {}; // ok
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[=, &x = &i] {}; // expected-error {{non-const lvalue reference to type 'int *' cannot bind to a temporary of type 'int *'}}
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[&, this] {}; // expected-error {{'this' cannot be captured in this context}}
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[i, &, x = 2] {}; // expected-error {{capture default must be first}}
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[i, =, x = 2] {}; // expected-error {{capture default must be first}}
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}
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} // namespace misplaced_capture_default
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namespace misplaced_capture_default_pack {
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template <typename... Args> void Test(Args... args) {
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[&, args...] {}; // ok
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[args..., &] {}; // expected-error {{capture default must be first}}
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[=, &args...] {}; // ok
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[&, ... xs = &args] {}; // ok
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[&, ... xs = &] {}; // expected-error {{expected expression}}
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[... xs = &] {}; // expected-error {{expected expression}}
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[... xs = &args, = ] {}; // expected-error {{capture default must be first}}
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[... xs = &args, &] {}; // expected-error {{capture default must be first}}
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}
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} // namespace misplaced_capture_default_pack
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namespace GH163498 {
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struct S {
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template <class T> S(T) {}
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};
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void t() {
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S s{[a(42), &] {}}; // expected-error {{capture default must be first}}
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}
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}
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