1// RUN: %clang_cc1 -fsyntax-only -fblocks -verify %s
2// RUN: %clang_cc1 -fdiagnostics-parseable-fixits -fblocks %s 2>&1 | FileCheck %s
3
4@class NSString;
5extern void NSLog(NSString *, ...);
6int printf(const char * restrict, ...) ;
7
8void test_integer_correction (int x) {
9  printf("%d", x); // no-warning
10  printf("%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
11  printf("%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
12  // CHECK: fix-it:"{{.*}}":{10:11-10:13}:"%d"
13  // CHECK: fix-it:"{{.*}}":{11:11-11:14}:"%d"
14
15  NSLog(@"%d", x); // no-warning
16  NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
17  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
18  NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has type 'int'}}
19  // CHECK: fix-it:"{{.*}}":{16:11-16:13}:"%d"
20  // CHECK: fix-it:"{{.*}}":{17:11-17:14}:"%d"
21  // CHECK: fix-it:"{{.*}}":{18:11-18:13}:"%d"
22}
23
24void test_string_correction (char *x) {
25  printf("%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'char *'}}
26  printf("%s", x); // no-warning
27  printf("%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'char *'}}
28  // CHECK: fix-it:"{{.*}}":{25:11-25:13}:"%s"
29  // CHECK: fix-it:"{{.*}}":{27:11-27:14}:"%s"
30
31  NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'char *'}}
32  NSLog(@"%s", x); // no-warning
33  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'char *'}}
34  NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has type 'char *'}}
35  // CHECK: fix-it:"{{.*}}":{31:11-31:13}:"%s"
36  // CHECK: fix-it:"{{.*}}":{33:11-33:14}:"%s"
37  // CHECK: fix-it:"{{.*}}":{34:11-34:13}:"%s"
38}
39
40void test_object_correction (id x) {
41  NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'id'}}
42  NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'id'}}
43  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'id'}}
44  NSLog(@"%@", x); // no-warning
45  // CHECK: fix-it:"{{.*}}":{41:11-41:13}:"%@"
46  // CHECK: fix-it:"{{.*}}":{42:11-42:13}:"%@"
47  // CHECK: fix-it:"{{.*}}":{43:11-43:14}:"%@"
48}
49
50typedef const struct __CFString * __attribute__((NSObject)) CFStringRef;
51void test_cf_object_correction (CFStringRef x) {
52  NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'CFStringRef'}}
53  NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'CFStringRef'}}
54  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'CFStringRef'}}
55  NSLog(@"%@", x); // no-warning
56  // CHECK: fix-it:"{{.*}}":{52:11-52:13}:"%@"
57  // CHECK: fix-it:"{{.*}}":{53:11-53:13}:"%@"
58  // CHECK: fix-it:"{{.*}}":{54:11-54:14}:"%@"
59}
60
61typedef void (^block_t)(void);
62void test_block_correction (block_t x) {
63  NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'block_t'}}
64  NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'block_t'}}
65  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'block_t'}}
66  NSLog(@"%@", x); // no-warning
67  // CHECK: fix-it:"{{.*}}":{63:11-63:13}:"%@"
68  // CHECK: fix-it:"{{.*}}":{64:11-64:13}:"%@"
69  // CHECK: fix-it:"{{.*}}":{65:11-65:14}:"%@"
70}
71
72void test_class_correction (Class x) {
73  NSLog(@"%d", x); // expected-warning{{format specifies type 'int' but the argument has type 'Class'}}
74  NSLog(@"%s", x); // expected-warning{{format specifies type 'char *' but the argument has type 'Class'}}
75  NSLog(@"%lf", x); // expected-warning{{format specifies type 'double' but the argument has type 'Class'}}
76  NSLog(@"%@", x); // no-warning
77  // CHECK: fix-it:"{{.*}}":{73:11-73:13}:"%@"
78  // CHECK: fix-it:"{{.*}}":{74:11-74:13}:"%@"
79  // CHECK: fix-it:"{{.*}}":{75:11-75:14}:"%@"
80}
81
82
83typedef enum : int { NSUTF8StringEncoding = 8 } NSStringEncoding;
84void test_fixed_enum_correction(NSStringEncoding x) {
85  NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has underlying type 'int'}}
86  // CHECK: fix-it:"{{.*}}":{85:11-85:13}:"%d"
87}
88
89typedef __SIZE_TYPE__ size_t;
90enum SomeSize : size_t { IntegerSize = sizeof(int) };
91void test_named_fixed_enum_correction(enum SomeSize x) {
92  NSLog(@"%@", x); // expected-warning{{format specifies type 'id' but the argument has underlying type 'size_t' (aka}}
93  // CHECK: fix-it:"{{.*}}":{92:11-92:13}:"%zu"
94}
95
96
97typedef unsigned char uint8_t;
98void test_char(char c, signed char s, unsigned char u, uint8_t n) {
99  NSLog(@"%s", c); // expected-warning{{format specifies type 'char *' but the argument has type 'char'}}
100  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
101
102  NSLog(@"%lf", c); // expected-warning{{format specifies type 'double' but the argument has type 'char'}}
103  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
104
105  NSLog(@"%@", c); // expected-warning{{format specifies type 'id' but the argument has type 'char'}}
106  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
107
108  NSLog(@"%c", c); // no-warning
109  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
110
111
112  NSLog(@"%s", s); // expected-warning{{format specifies type 'char *' but the argument has type 'signed char'}}
113  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
114
115  NSLog(@"%lf", s); // expected-warning{{format specifies type 'double' but the argument has type 'signed char'}}
116  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
117
118  NSLog(@"%@", s); // expected-warning{{format specifies type 'id' but the argument has type 'signed char'}}
119  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
120
121  NSLog(@"%c", s); // no-warning
122  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
123
124
125  NSLog(@"%s", u); // expected-warning{{format specifies type 'char *' but the argument has type 'unsigned char'}}
126  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
127
128  NSLog(@"%lf", u); // expected-warning{{format specifies type 'double' but the argument has type 'unsigned char'}}
129  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
130
131  NSLog(@"%@", u); // expected-warning{{format specifies type 'id' but the argument has type 'unsigned char'}}
132  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
133
134  NSLog(@"%c", u); // no-warning
135  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
136
137
138  NSLog(@"%s", n); // expected-warning{{format specifies type 'char *' but the argument has type 'uint8_t' (aka 'unsigned char')}}
139  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
140
141  NSLog(@"%lf", n); // expected-warning{{format specifies type 'double' but the argument has type 'uint8_t' (aka 'unsigned char')}}
142  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%hhu"
143
144  NSLog(@"%@", n); // expected-warning{{format specifies type 'id' but the argument has type 'uint8_t' (aka 'unsigned char')}}
145  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
146
147  NSLog(@"%c", n); // no-warning
148  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
149
150
151  NSLog(@"%s", 'a'); // expected-warning{{format specifies type 'char *' but the argument has type 'char'}}
152  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
153
154  NSLog(@"%lf", 'a'); // expected-warning{{format specifies type 'double' but the argument has type 'char'}}
155  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%c"
156
157  NSLog(@"%@", 'a'); // expected-warning{{format specifies type 'id' but the argument has type 'char'}}
158  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
159
160  NSLog(@"%c", 'a'); // no-warning
161  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
162
163
164  NSLog(@"%s", 'abcd'); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
165  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
166
167  NSLog(@"%lf", 'abcd'); // expected-warning{{format specifies type 'double' but the argument has type 'int'}}
168  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%d"
169
170  NSLog(@"%@", 'abcd'); // expected-warning{{format specifies type 'id' but the argument has type 'int'}}
171  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
172}
173
174void multichar_constants_false_negative() {
175  // The value of a multi-character constant is implementation-defined, but
176  // almost certainly shouldn't be printed with %c. However, the current
177  // type-checker expects %c to correspond to an integer argument, because
178  // many C library functions like fgetc() actually return an int (using -1
179  // as a sentinel).
180  NSLog(@"%c", 'abcd'); // missing-warning{{format specifies type 'char' but the argument has type 'int'}}
181  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
182}
183
184
185void test_percent_C() {
186  const unsigned short data = 'a';
187  NSLog(@"%C", data);  // no-warning
188
189  NSLog(@"%C", 0x260300);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
190  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
191  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unsigned short)"
192
193  typedef unsigned short unichar;
194
195  NSLog(@"%C", 0x260300);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
196  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
197  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
198
199  NSLog(@"%C", data ? 0x2F0000 : 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
200  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
201  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)("
202  // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:42-[[@LINE-3]]:42}:")"
203
204  NSLog(@"%C", 0.0); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'double'}}
205  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%f"
206  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
207
208  NSLog(@"%C", (char)0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'char'}}
209  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
210  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:22}:"(unichar)"
211
212  NSLog(@"%C", 'a'); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'char'}}
213  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
214  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:22}:"(unichar)"
215}
216
217
218void testSignedness(long i, unsigned long u) {
219  printf("%d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
220  printf("%i", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
221  printf("%u", i); // expected-warning{{format specifies type 'unsigned int' but the argument has type 'long'}}
222
223  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
224  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
225  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%ld"
226
227  printf("%+d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
228
229  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:14}:"%+ld"
230}
231
232void testEnum() {
233  typedef enum {
234    ImplicitA = 1,
235    ImplicitB = 2
236  } Implicit;
237
238  typedef enum {
239    ImplicitLLA = 0,
240    ImplicitLLB = ~0ULL
241  } ImplicitLongLong;
242
243  typedef enum : short {
244    ExplicitA = 0,
245    ExplicitB
246  } ExplicitShort;
247
248  printf("%f", (Implicit)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
249  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{[du]}}"
250
251  printf("%f", (ImplicitLongLong)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
252  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{l*[du]}}"
253
254  printf("%f", (ExplicitShort)0); // expected-warning{{format specifies type 'double' but the argument has underlying type 'short'}}
255  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hd"
256}
257