// RUN: rm -rf %t // RUN: mkdir %t // RUN: cp %S/Inputs/performance-unnecessary-value-param/header.h %t/header.h // RUN: %check_clang_tidy %s performance-unnecessary-value-param %t/temp -- -- -std=c++11 -I %t // RUN: diff %t/header.h %S/Inputs/performance-unnecessary-value-param/header-fixed.h #include "header.h" int f1(int n, ABC v1, ABC v2) { // CHECK-MESSAGES: [[@LINE-1]]:19: warning: the parameter 'v1' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param] // CHECK-MESSAGES: [[@LINE-2]]:27: warning: the parameter 'v2' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param] // CHECK-FIXES: int f1(int n, const ABC& v1, const ABC& v2) { return v1.get(n) + v2.get(n); } int f2(int n, ABC v2) { // CHECK-MESSAGES: [[@LINE-1]]:19: warning: the parameter 'v2' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param] // CHECK-FIXES: int f2(int n, const ABC& v2) { }