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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
// RUN: %clang_cc1 -triple %itanium_abi_triple -fsyntax-only -fblocks -verify %s
// RUN: %clang_cc1 -triple %itanium_abi_triple -fdiagnostics-parseable-fixits -fblocks %s 2>&1 | FileCheck %s
@class NSString;
extern void NSLog(NSString *, ...);
int printf(const char * restrict, ...) ;
void test_integer_correction (int x) {
printf("%d", x); // no-warning
printf("%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
printf("%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{10:11-10:13}:"%d"
// CHECK: fix-it:"{{.*}}":{11:11-11:14}:"%d"
NSLog(@"%d", x); // no-warning
NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{16:11-16:13}:"%d"
// CHECK: fix-it:"{{.*}}":{17:11-17:14}:"%d"
// CHECK: fix-it:"{{.*}}":{18:11-18:13}:"%d"
}
void test_string_correction (char *x) {
printf("%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'char *'}}
printf("%s", x); // no-warning
printf("%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'char *'}}
// CHECK: fix-it:"{{.*}}":{25:11-25:13}:"%s"
// CHECK: fix-it:"{{.*}}":{27:11-27:14}:"%s"
NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'char *'}}
NSLog(@"%s", x); // no-warning
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'char *'}}
NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has type 'char *'}}
// CHECK: fix-it:"{{.*}}":{31:11-31:13}:"%s"
// CHECK: fix-it:"{{.*}}":{33:11-33:14}:"%s"
// CHECK: fix-it:"{{.*}}":{34:11-34:13}:"%s"
}
void test_object_correction (id x) {
NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'id'}}
NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'id'}}
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'id'}}
NSLog(@"%@", x); // no-warning
// CHECK: fix-it:"{{.*}}":{41:11-41:13}:"%@"
// CHECK: fix-it:"{{.*}}":{42:11-42:13}:"%@"
// CHECK: fix-it:"{{.*}}":{43:11-43:14}:"%@"
}
typedef const struct __CFString * __attribute__((NSObject)) CFStringRef;
void test_cf_object_correction (CFStringRef x) {
NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'CFStringRef'}}
NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'CFStringRef'}}
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'CFStringRef'}}
NSLog(@"%@", x); // no-warning
// CHECK: fix-it:"{{.*}}":{52:11-52:13}:"%@"
// CHECK: fix-it:"{{.*}}":{53:11-53:13}:"%@"
// CHECK: fix-it:"{{.*}}":{54:11-54:14}:"%@"
}
typedef void (^block_t)(void);
void test_block_correction (block_t x) {
NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'block_t'}}
NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'block_t'}}
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'block_t'}}
NSLog(@"%@", x); // no-warning
// CHECK: fix-it:"{{.*}}":{63:11-63:13}:"%@"
// CHECK: fix-it:"{{.*}}":{64:11-64:13}:"%@"
// CHECK: fix-it:"{{.*}}":{65:11-65:14}:"%@"
}
void test_class_correction (Class x) {
NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'Class'}}
NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'Class'}}
NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'Class'}}
NSLog(@"%@", x); // no-warning
// CHECK: fix-it:"{{.*}}":{73:11-73:13}:"%@"
// CHECK: fix-it:"{{.*}}":{74:11-74:13}:"%@"
// CHECK: fix-it:"{{.*}}":{75:11-75:14}:"%@"
}
typedef enum : int { NSUTF8StringEncoding = 8 } NSStringEncoding;
void test_fixed_enum_correction(NSStringEncoding x) {
NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has underlying type 'int'}}
// CHECK: fix-it:"{{.*}}":{85:11-85:13}:"%d"
}
typedef __SIZE_TYPE__ size_t;
enum SomeSize : size_t { IntegerSize = sizeof(int) };
void test_named_fixed_enum_correction(enum SomeSize x) {
NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has underlying type 'size_t' (aka}}
// CHECK: fix-it:"{{.*}}":{92:11-92:13}:"%zu"
}
typedef unsigned char uint8_t;
void test_char(char c, signed char s, unsigned char u, uint8_t n) {
NSLog(@"%s", c); // expected-warning{{format specifies type 'char *' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%lf", c); // expected-warning{{format specifies type 'double' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
NSLog(@"%@", c); // expected-warning{{format specifies type 'id' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%c", c); // no-warning
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%s", s); // expected-warning{{format specifies type 'char *' but the argument has type 'signed char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%lf", s); // expected-warning{{format specifies type 'double' but the argument has type 'signed char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
NSLog(@"%@", s); // expected-warning{{format specifies type 'id' but the argument has type 'signed char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%c", s); // no-warning
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%s", u); // expected-warning{{format specifies type 'char *' but the argument has type 'unsigned char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%lf", u); // expected-warning{{format specifies type 'double' but the argument has type 'unsigned char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
NSLog(@"%@", u); // expected-warning{{format specifies type 'id' but the argument has type 'unsigned char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%c", u); // no-warning
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%s", n); // expected-warning{{format specifies type 'char *' but the argument has type 'uint8_t' (aka 'unsigned char')}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
NSLog(@"%lf", n); // expected-warning{{format specifies type 'double' but the argument has type 'uint8_t' (aka 'unsigned char')}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%hhu"
NSLog(@"%@", n); // expected-warning{{format specifies type 'id' but the argument has type 'uint8_t' (aka 'unsigned char')}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
NSLog(@"%c", n); // no-warning
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
NSLog(@"%s", 'a'); // expected-warning{{format specifies type 'char *' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%lf", 'a'); // expected-warning{{format specifies type 'double' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
NSLog(@"%@", 'a'); // expected-warning{{format specifies type 'id' but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%c", 'a'); // no-warning
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
NSLog(@"%s", 'abcd'); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
NSLog(@"%lf", 'abcd'); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%d"
NSLog(@"%@", 'abcd'); // expected-warning{{format specifies type 'id' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
NSLog(@"%hhd", 'a'); // expected-warning{{format specifies type 'char' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:15}:"%d"
NSLog(@"%hhu", 'a'); // expected-warning{{format specifies type 'unsigned char' but the argument has type 'int'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:15}:"%d"
}
void multichar_constants_false_negative() {
// The value of a multi-character constant is implementation-defined, but
// almost certainly shouldn't be printed with %c. However, the current
// type-checker expects %c to correspond to an integer argument, because
// many C library functions like fgetc() actually return an int (using -1
// as a sentinel).
NSLog(@"%c", 'abcd'); // missing-warning{{format specifies type 'char' but the argument has type 'int'}}
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
}
void test_percent_C() {
const unsigned short data = 'a';
NSLog(@"%C", data); // no-warning
NSLog(@"%C", 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
// CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unsigned short)"
typedef unsigned short unichar;
NSLog(@"%C", 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
// CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
NSLog(@"%C", data ? 0x2F0000 : 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
// CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)("
// CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:42-[[@LINE-3]]:42}:")"
NSLog(@"%C", 0.0); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'double'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%f"
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
NSLog(@"%C", (char)0x260300);
NSLog(@"%C", 'a'); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'char'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
// CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:22}:"(unichar)"
}
void testSignedness(long i, unsigned long u) {
printf("%d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
printf("%i", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
printf("%u", i); // expected-warning{{format specifies type 'unsigned int' but the argument has type 'long'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%ld"
printf("%+d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:14}:"%+ld"
}
void testSizeTypes() {
printf("%zu", 0.f); // expected-warning-re{{format specifies type 'size_t' (aka '{{.+}}') but the argument has type 'float'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
printf("%zd", 0.f); // expected-warning-re{{format specifies type 'ssize_t' (aka '{{.+}}') but the argument has type 'float'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
short x;
printf("%zn", &x); // expected-warning-re{{format specifies type 'ssize_t *' (aka '{{.+}}') but the argument has type 'short *'}}
// PrintfSpecifier::fixType doesn't handle %n, so a fix-it is not emitted,
// see the comment in PrintfSpecifier::fixType in PrintfFormatString.cpp.
}
typedef __PTRDIFF_TYPE__ ptrdiff_t;
#define __UNSIGNED_PTRDIFF_TYPE__ \
__typeof__(_Generic((__PTRDIFF_TYPE__)0, \
long long int : (unsigned long long int)0, \
long int : (unsigned long int)0, \
int : (unsigned int)0, \
short : (unsigned short)0, \
signed char : (unsigned char)0))
void testPtrDiffTypes() {
__UNSIGNED_PTRDIFF_TYPE__ p1 = 0;
printf("%tu", p1); // No warning.
printf("%tu", 0.f); // expected-warning-re{{format specifies type 'unsigned ptrdiff_t' (aka '{{.+}}') but the argument has type 'float'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
ptrdiff_t p2 = 0;
printf("%td", p2); // No warning.
printf("%td", 0.f); // expected-warning-re{{format specifies type 'ptrdiff_t' (aka '{{.+}}') but the argument has type 'float'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
ptrdiff_t p3 = 0;
printf("%tn", &p3); // No warning.
short x;
printf("%tn", &x); // expected-warning-re{{format specifies type 'ptrdiff_t *' (aka '{{.+}}') but the argument has type 'short *'}}
// PrintfSpecifier::fixType doesn't handle %n, so a fix-it is not emitted,
// see the comment in PrintfSpecifier::fixType in PrintfFormatString.cpp.
}
void testEnum() {
typedef enum {
ImplicitA = 1,
ImplicitB = 2
} Implicit;
typedef enum {
ImplicitLLA = 0,
ImplicitLLB = ~0ULL
} ImplicitLongLong;
typedef enum : short {
ExplicitA = 0,
ExplicitB
} ExplicitShort;
printf("%f", (Implicit)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{[du]}}"
printf("%f", (ImplicitLongLong)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{l*[du]}}"
printf("%f", (ExplicitShort)0); // expected-warning{{format specifies type 'double' but the argument has underlying type 'short'}}
// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hd"
}
|
