1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// RUN: echo "static void staticFunctionHeader(int i) {}" > %T/header.h
// RUN: echo "static void staticFunctionHeader(int /*i*/) {}" > %T/header-fixed.h
// RUN: %check_clang_tidy %s misc-unused-parameters %t -- -header-filter='.*' -- -std=c++11 -fno-delayed-template-parsing
// RUN: diff %T/header.h %T/header-fixed.h
#include "header.h"
// CHECK-MESSAGES: header.h:1:38: warning
// Basic removal
// =============
void a(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: parameter 'i' is unused [misc-unused-parameters]
// CHECK-FIXES: {{^}}void a(int /*i*/) {}{{$}}
void b(int i = 1) {}
// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: parameter 'i' is unused [misc-unused-parameters]
// CHECK-FIXES: {{^}}void b(int /*i*/) {}{{$}}
void c(int *i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: parameter 'i' is unused [misc-unused-parameters]
// CHECK-FIXES: {{^}}void c(int * /*i*/) {}{{$}}
// Unchanged cases
// ===============
void g(int i); // Don't remove stuff in declarations
void h(int i) { (void)i; } // Don't remove used parameters
bool useLambda(int (*fn)(int));
static bool static_var = useLambda([] (int a) { return a; });
// Remove parameters of local functions
// ====================================
static void staticFunctionA(int i);
// CHECK-FIXES: {{^}}static void staticFunctionA();
static void staticFunctionA(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:33: warning
// CHECK-FIXES: {{^}}static void staticFunctionA()
static void staticFunctionB(int i, int j) { (void)i; }
// CHECK-MESSAGES: :[[@LINE-1]]:40: warning
// CHECK-FIXES: {{^}}static void staticFunctionB(int i)
static void staticFunctionC(int i, int j) { (void)j; }
// CHECK-MESSAGES: :[[@LINE-1]]:33: warning
// CHECK-FIXES: {{^}}static void staticFunctionC(int j)
static void staticFunctionD(int i, int j, int k) { (void)i; (void)k; }
// CHECK-MESSAGES: :[[@LINE-1]]:40: warning
// CHECK-FIXES: {{^}}static void staticFunctionD(int i, int k)
static void staticFunctionE(int i = 4) {}
// CHECK-MESSAGES: :[[@LINE-1]]:33: warning
// CHECK-FIXES: {{^}}static void staticFunctionE()
static void someCallSites() {
staticFunctionA(1);
// CHECK-FIXES: staticFunctionA();
staticFunctionB(1, 2);
// CHECK-FIXES: staticFunctionB(1);
staticFunctionC(1, 2);
// CHECK-FIXES: staticFunctionC(2);
staticFunctionD(1, 2, 3);
// CHECK-FIXES: staticFunctionD(1, 3);
staticFunctionE();
}
/*
* FIXME: This fails because the removals overlap and ClangTidy doesn't apply
* them.
* static void bothVarsUnused(int a, int b) {}
*/
// Regression test for long variable names and expressions
// =======================================================
static int variableWithLongName1(int LongName1, int LongName2) {
// CHECK-MESSAGES: :[[@LINE-1]]:53: warning: parameter 'LongName2' is unused
// CHECK-FIXES: {{^}}static int variableWithLongName1(int LongName1) {
return LongName1;
}
static int variableWithLongName2(int LongName1, int LongName2) {
// CHECK-MESSAGES: :[[@LINE-1]]:38: warning: parameter 'LongName1' is unused
// CHECK-FIXES: {{^}}static int variableWithLongName2(int LongName2) {
return LongName2;
}
static void someLongNameCallSites() {
int LongName1 = 7, LongName2 = 17;
variableWithLongName1(LongName1, LongName2);
// CHECK-FIXES: variableWithLongName1(LongName1);
variableWithLongName2(LongName1, LongName2);
// CHECK-FIXES: variableWithLongName2(LongName2);
}
class SomeClass {
static void f(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:21: warning
// CHECK-FIXES: static void f(int /*i*/) {}
};
namespace {
class C {
public:
void f(int i);
// CHECK-FIXES: void f();
void g(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:14: warning
// CHECK-FIXES: void g() {}
void h(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:14: warning
// CHECK-FIXES: void h(int /*i*/) {}
};
void C::f(int i) {}
// CHECK-MESSAGES: :[[@LINE-1]]:15: warning
// CHECK-FIXES: void C::f() {}
template <typename T>
void useFunction(T t);
void someMoreCallSites() {
C c;
c.f(1);
// CHECK-FIXES: c.f();
c.g(1);
// CHECK-FIXES: c.g();
useFunction(&C::h);
}
class Base {
virtual void f(int i);
};
class Derived : public Base {
void f(int i) override {}
// CHECK-MESSAGES: :[[@LINE-1]]:14: warning
// CHECK-FIXES: void f(int /*i*/) override {}
};
} // end namespace
template <typename T> void someFunctionTemplate(T b, T e) { (void)b; (void)e; }
template <typename T> void someFunctionTemplateOneUnusedParam(T b, T e) { (void)e; }
// CHECK-MESSAGES: :[[@LINE-1]]:65: warning
// CHECK-FIXES: {{^}}template <typename T> void someFunctionTemplateOneUnusedParam(T /*b*/, T e) { (void)e; }
template <typename T> void someFunctionTemplateAllUnusedParams(T b, T e) {}
// CHECK-MESSAGES: :[[@LINE-1]]:66: warning
// CHECK-MESSAGES: :[[@LINE-2]]:71: warning
// CHECK-FIXES: {{^}}template <typename T> void someFunctionTemplateAllUnusedParams(T /*b*/, T /*e*/) {}
static void dontGetConfusedByParametersInFunctionTypes() { void (*F)(int i); }
template <typename T> class Function {};
static Function<void(int, int i)> dontGetConfusedByFunctionReturnTypes() {
return Function<void(int, int)>();
}
|
