// RUN: %check_clang_tidy %s modernize-use-nodiscard %t -- \
// RUN:   -config="{CheckOptions: [{key: modernize-use-nodiscard.ReplacementString, value: '__attribute__((warn_unused_result))'}]}"

class Foo
{
public:
    bool f1() const;
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: function 'f1' should be marked __attribute__((warn_unused_result)) [modernize-use-nodiscard]
    // CHECK-FIXES: __attribute__((warn_unused_result)) bool f1() const;

    bool f2(int) const;
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: function 'f2' should be marked __attribute__((warn_unused_result)) [modernize-use-nodiscard]
    // CHECK-FIXES: __attribute__((warn_unused_result)) bool f2(int) const;

    bool f3(const int &) const;
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: function 'f3' should be marked __attribute__((warn_unused_result)) [modernize-use-nodiscard]
    // CHECK-FIXES: __attribute__((warn_unused_result)) bool f3(const int &) const;

    bool f4(void) const;
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: function 'f4' should be marked __attribute__((warn_unused_result)) [modernize-use-nodiscard]
    // CHECK-FIXES: __attribute__((warn_unused_result)) bool f4(void) const;
};