87a036259b
Summary: Warn when a lambda explicitly captures something that is not used in its body. The warning is part of -Wunused and can be enabled with -Wunused-lambda-capture. Reviewers: rsmith, arphaman, jbcoe, aaron.ballman Subscribers: Quuxplusone, arphaman, cfe-commits Differential Revision: https://reviews.llvm.org/D28467 llvm-svn: 291905
29 lines
914 B
C++
29 lines
914 B
C++
// RUN: %clang_cc1 -std=c++11 %s -Wunused -Wno-unused-lambda-capture -verify
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struct MoveOnly {
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MoveOnly(MoveOnly&&);
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MoveOnly(const MoveOnly&);
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};
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template<typename T> T &&move(T&);
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void test_special_member_functions(MoveOnly mo, int i) {
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auto lambda1 = [i]() { }; // expected-note 2{{lambda expression begins here}} expected-note 2{{candidate}}
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// Default constructor
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decltype(lambda1) lambda2; // expected-error{{no matching constructor}}
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// Copy assignment operator
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lambda1 = lambda1; // expected-error{{copy assignment operator is implicitly deleted}}
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// Move assignment operator
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lambda1 = move(lambda1); // expected-error{{copy assignment operator is implicitly deleted}}
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// Copy constructor
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decltype(lambda1) lambda3 = lambda1;
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decltype(lambda1) lambda4(lambda1);
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// Move constructor
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decltype(lambda1) lambda5 = move(lambda1);
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decltype(lambda1) lambda6(move(lambda1));
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}
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