21 lines · cpp
1// RUN: rm -rf %t2// RUN: mkdir %t3// RUN: cp %S/Inputs/unnecessary-value-param/header.h %t/header.h4// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t/temp -- -- -I %t5// RUN: diff %t/header.h %S/Inputs/unnecessary-value-param/header-fixed.h6 7#include "header.h"8 9 10 11int f1(int n, ABC v1, ABC v2) {12 // CHECK-MESSAGES: [[@LINE-1]]:19: warning: the parameter 'v1' of type 'ABC' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param]13 // CHECK-MESSAGES: [[@LINE-2]]:27: warning: the parameter 'v2' of type 'ABC' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param]14 // CHECK-FIXES: int f1(int n, const ABC& v1, const ABC& v2) {15 return v1.get(n) + v2.get(n);16}17void f2(int n, ABC v2) {18 // CHECK-MESSAGES: [[@LINE-1]]:20: warning: the parameter 'v2' of type 'ABC' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param]19 // CHECK-FIXES: void f2(int n, const ABC& v2) {20}21