1 // RUN: %clang_cc1 -triple %itanium_abi_triple -fsyntax-only -fblocks -verify %s
2 // RUN: %clang_cc1 -triple %itanium_abi_triple -fdiagnostics-parseable-fixits -fblocks %s 2>&1 | FileCheck %s
5 extern void NSLog(NSString *, ...);
6 int printf(const char * restrict, ...) ;
8 void 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"
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"
24 void 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"
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"
40 void 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}:"%@"
50 typedef const struct __CFString * __attribute__((NSObject)) CFStringRef;
51 void 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}:"%@"
61 typedef void (^block_t)(void);
62 void 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}:"%@"
72 void 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}:"%@"
83 typedef enum : int { NSUTF8StringEncoding = 8 } NSStringEncoding;
84 void 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"
89 typedef __SIZE_TYPE__ size_t;
90 enum SomeSize : size_t { IntegerSize = sizeof(int) };
91 void 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"
97 typedef unsigned char uint8_t;
98 void 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"
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"
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"
108 NSLog(@"%c", c); // no-warning
109 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
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"
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"
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"
121 NSLog(@"%c", s); // no-warning
122 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
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"
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"
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"
134 NSLog(@"%c", u); // no-warning
135 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
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"
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"
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"
147 NSLog(@"%c", n); // no-warning
148 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hhu"
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"
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"
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"
160 NSLog(@"%c", 'a'); // no-warning
161 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
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"
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"
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"
173 NSLog(@"%hhd", 'a'); // expected-warning{{format specifies type 'char' but the argument has type 'int'}}
174 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:15}:"%d"
176 NSLog(@"%hhu", 'a'); // expected-warning{{format specifies type 'unsigned char' but the argument has type 'int'}}
177 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:15}:"%d"
180 void multichar_constants_false_negative(void) {
181 // The value of a multi-character constant is implementation-defined, but
182 // almost certainly shouldn't be printed with %c. However, the current
183 // type-checker expects %c to correspond to an integer argument, because
184 // many C library functions like fgetc() actually return an int (using -1
186 NSLog(@"%c", 'abcd'); // missing-warning{{format specifies type 'char' but the argument has type 'int'}}
187 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
191 void test_percent_C(void) {
192 const unsigned short data = 'a';
193 NSLog(@"%C", data); // no-warning
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}:"(unsigned short)"
199 typedef unsigned short unichar;
201 NSLog(@"%C", 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
202 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
203 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
205 NSLog(@"%C", data ? 0x2F0000 : 0x260300); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
206 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
207 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)("
208 // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:42-[[@LINE-3]]:42}:")"
210 NSLog(@"%C", 0.0); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'double'}}
211 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%f"
212 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
214 NSLog(@"%C", (char)0x260300);
216 NSLog(@"%C", 'a'); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'char'}}
217 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%c"
218 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:22}:"(unichar)"
222 void testSignedness(long i, unsigned long u) {
223 printf("%d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
224 printf("%i", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
225 printf("%u", i); // expected-warning{{format specifies type 'unsigned int' but the argument has type 'long'}}
227 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
228 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%lu"
229 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:11-[[@LINE-4]]:13}:"%ld"
231 printf("%+d", u); // expected-warning{{format specifies type 'int' but the argument has type 'unsigned long'}}
233 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:14}:"%+ld"
236 void testSizeTypes(void) {
237 printf("%zu", 0.f); // expected-warning-re{{format specifies type 'size_t' (aka '{{.+}}') but the argument has type 'float'}}
238 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
240 printf("%zd", 0.f); // expected-warning-re{{format specifies type 'ssize_t' (aka '{{.+}}') but the argument has type 'float'}}
241 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
244 #if !defined(__ANDROID__) && !defined(__Fuchsia__)
245 printf("%zn", &x); // expected-warning-re{{format specifies type 'ssize_t *' (aka '{{.+}}') but the argument has type 'short *'}}
247 printf("%zn", &x); // expected-warning-re{{format specifies type 'ssize_t *' (aka '{{.+}}') but the argument has type 'short *'}}
248 // expected-warning@-1 {{'%n' specifier not supported on this platform}}
249 #endif // !defined(__ANDROID__) && !defined(__Fuchsia__)
250 // PrintfSpecifier::fixType doesn't handle %n, so a fix-it is not emitted,
251 // see the comment in PrintfSpecifier::fixType in PrintfFormatString.cpp.
254 typedef __PTRDIFF_TYPE__ ptrdiff_t;
255 #define __UNSIGNED_PTRDIFF_TYPE__ \
256 __typeof__(_Generic((__PTRDIFF_TYPE__)0, \
257 long long int : (unsigned long long int)0, \
258 long int : (unsigned long int)0, \
259 int : (unsigned int)0, \
260 short : (unsigned short)0, \
261 signed char : (unsigned char)0))
263 void testPtrDiffTypes(void) {
264 __UNSIGNED_PTRDIFF_TYPE__ p1 = 0;
265 printf("%tu", p1); // No warning.
267 printf("%tu", 0.f); // expected-warning-re{{format specifies type 'unsigned ptrdiff_t' (aka '{{.+}}') but the argument has type 'float'}}
268 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
271 printf("%td", p2); // No warning.
273 printf("%td", 0.f); // expected-warning-re{{format specifies type 'ptrdiff_t' (aka '{{.+}}') but the argument has type 'float'}}
274 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:14}:"%f"
277 #if !defined(__ANDROID__) && !defined(__Fuchsia__)
278 printf("%tn", &p3); // No warning.
280 printf("%tn", &p3); // expected-warning{{'%n' specifier not supported on this platform}}
281 #endif // !defined(__ANDROID__) && !defined(__Fuchsia__)
284 #if !defined(__ANDROID__) && !defined(__Fuchsia__)
285 printf("%tn", &x); // expected-warning-re{{format specifies type 'ptrdiff_t *' (aka '{{.+}}') but the argument has type 'short *'}}
286 // PrintfSpecifier::fixType doesn't handle %n, so a fix-it is not emitted,
287 // see the comment in PrintfSpecifier::fixType in PrintfFormatString.cpp.
289 printf("%tn", &x); // expected-warning-re{{format specifies type 'ptrdiff_t *' (aka '{{.+}}') but the argument has type 'short *'}}
290 // expected-warning@-1 {{'%n' specifier not supported on this platform}}
291 #endif // !defined(__ANDROID__) && !defined(__Fuchsia__)
294 void testEnum(void) {
305 typedef enum : short {
310 printf("%f", (Implicit)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
311 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{[du]}}"
313 printf("%f", (ImplicitLongLong)0); // expected-warning{{format specifies type 'double' but the argument has underlying type}}
314 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%{{l*[du]}}"
316 printf("%f", (ExplicitShort)0); // expected-warning{{format specifies type 'double' but the argument has underlying type 'short'}}
317 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%hd"