125 lines · cpp
1// RUN: %clang_cc1 -fcxx-exceptions -fsyntax-only -Wunused -Wunused-template -Wunused-exception-parameter -Wunused-member-function -fdiagnostics-print-source-range-info %s 2>&1 | FileCheck %s --strict-whitespace2#include "Inputs/diag-unused-source-ranges.h"3 4#define CAT(a, b) a ## b5 6// CHECK: :{55:15-55:20}: warning: unused exception parameter 'param'7// CHECK-NEXT: catch (int ¶m) {}8// CHECK-NEXT: ^~~~~{{$}}9 10// CHECK: :{53:7-53:12}: warning: unused variable 'local'11// CHECK-NEXT: int local = 0;12// CHECK-NEXT: ^~~~~{{$}}13 14// CHECK: In file included from15// CHECK-NEXT: :{1:13-1:18}: warning: 'static' function 'thing' declared in header file should be declared 'static inline'16// CHECK-NEXT: static void thing(void) {}17// CHECK-NEXT: ^~~~~{{$}}18 19namespace {20class A {21 // CHECK: :{[[@LINE+3]]:10-[[@LINE+3]]:14}: warning: member function 'func' is not needed22 // CHECK-NEXT: void func() {}23 // CHECK-NEXT: ^~~~{{$}}24 void func() {}25 // CHECK: :{[[@LINE+3]]:32-[[@LINE+3]]:37}: warning: unused function template26 // CHECK-NEXT: void templ(T) {}27 // CHECK-NEXT: ^~~~~{{$}}28 template <typename T> void templ(T) {}29 // CHECK: :{[[@LINE+3]]:22-[[@LINE+3]]:32}: warning: member function 'templ<int>' is not needed30 // CHECK-NEXT: void templ<int>(int) {}31 // CHECK-NEXT: ^~~~~~~~~~{{$}}32 template <> void templ<int>(int) {}33 // CHECK: :{[[@LINE+3]]:22-[[@LINE+3]]:27}: warning: member function 'templ<float>' is not needed34 // CHECK-NEXT: void templ(float) {}35 // CHECK-NEXT: ^~~~~{{$}}36 template <> void templ(float) {}37 38 // CHECK: :{[[@LINE+4]]:10-[[@LINE+4]]:13}: warning: unused function template39 // CHECK-NEXT: void foo() {40 // CHECK-NEXT: ^~~{{$}}41 template <typename T>42 void foo() {43 func();44 templ(0);45 templ(0.0f);46 templ(0.0);47 }48};49// CHECK: :{[[@LINE+3]]:12-[[@LINE+3]]:23}: warning: unused function 'unused_func'50// CHECK-NEXT: static int unused_func(int aaa, char bbb) {51// CHECK-NEXT: ^~~~~~~~~~~{{$}}52static int unused_func(int aaa, char bbb) {53 int local = 0;54 try{}55 catch (int ¶m) {}56 return 0;57}58 59// CHECK: :{[[@LINE+4]]:6-[[@LINE+4]]:16}: warning: unused function template60// CHECK-NEXT: auto arrow_decl(T a, T b) ->61// CHECK-NEXT: ^~~~~~~~~~{{$}}62template <typename T>63auto arrow_decl(T a, T b) -> decltype(a + b) { thing(); return a + b; }64 65// CHECK: :{[[@LINE+4]]:6-[[@LINE+4]]:21}: warning: unused function 'arrow_decl<int>'66// CHECK-NEXT: auto arrow_decl<int>(int a, int b) ->67// CHECK-NEXT: ^~~~~~~~~~~~~~~{{$}}68template <>69auto arrow_decl<int>(int a, int b) -> int { return a + b; }70 71 72// CHECK: :{[[@LINE+4]]:10-[[@LINE+4]]:20}: warning: unused function template73// CHECK-NEXT: static T func_templ(int bbb, T ccc) {74// CHECK-NEXT: ^~~~~~~~~~{{$}}75template <typename T>76static T func_templ(int bbb, T ccc) {77 return ccc;78}79 80// CHECK: :{[[@LINE+3]]:17-[[@LINE+3]]:32}: warning: function 'func_templ<int>' is not needed81// CHECK-NEXT: int func_templ<int>(int bbb, int ccc) {82// CHECK-NEXT: ^~~~~~~~~~~~~~~{{$}}83template <> int func_templ<int>(int bbb, int ccc) {84 return bbb;85}86 87// CHECK: :{[[@LINE+3]]:35-[[@LINE+3]]:47}: warning: unused function template88// CHECK-NEXT: static void never_called() {89// CHECK-NEXT: ^~~~~~~~~~~~{{$}}90template <typename T> static void never_called() {91 func_templ<int>(0, 0);92}93 94// CHECK: :{[[@LINE+3]]:22-[[@LINE+3]]:31}: warning: unused variable template95// CHECK-NEXT: int var_templ =96// CHECK-NEXT: ^~~~~~~~~{{$}}97template <int n> int var_templ = n * var_templ<n-1>;98// CHECK: :{[[@LINE+3]]:17-[[@LINE+3]]:29}: warning: variable 'var_templ<0>' is not needed99// CHECK-NEXT: int var_templ<0> =100// CHECK-NEXT: ^~~~~~~~~~~~{{$}}101template <> int var_templ<0> = 1;102struct {103// CHECK: :{[[@LINE+3]]:8-[[@LINE+3]]:11}: warning: unused member function 'fun'104// CHECK-NEXT: void fun() {}105// CHECK-NEXT: ^~~{{$}}106 void fun() {}107// CHECK: :{[[@LINE+3]]:3-[[@LINE+3]]:8}: warning: unused variable 'var_x'108// CHECK-NEXT: } var_x;109// CHECK-NEXT: ^~~~~{{$}}110} var_x;111 112// CHECK: :{[[@LINE+5]]:12-[[@LINE+6]]:12}: warning: unused variable 'new_line'113// CHECK-NEXT: static int CAT(new_,114// CHECK-NEXT: ^~~~~~~~~{{$}}115// CHECK-NEXT: line) =116// CHECK-NEXT: ~~~~~{{$}}117static int CAT(new_,118 line) = sizeof(var_templ<0>);119}120 121// CHECK: :{[[@LINE+3]]:15-[[@LINE+3]]:27}: warning: unused variable 'const_unused'122// CHECK-NEXT: constexpr int const_unused = 1123// CHECK-NEXT: ^~~~~~~~~~~~{{$}}124constexpr int const_unused = 1;125