• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3#include <stdarg.h>
4#include <stddef.h>
5#define __need_wint_t
6#include <stddef.h> // For wint_t and wchar_t
7
8int printf(const char *restrict, ...);
9
10@interface NSString
11@end
12
13void test_os_log_format(const char *pc, int i, void *p, void *buf) {
14  __builtin_os_log_format(buf, "");
15  __builtin_os_log_format(buf, "%d"); // expected-warning {{more '%' conversions than data arguments}}
16  __builtin_os_log_format(buf, "%d", i);
17  __builtin_os_log_format(buf, "%P", p); // expected-warning {{using '%P' format specifier without precision}}
18  __builtin_os_log_format(buf, "%.10P", p);
19  __builtin_os_log_format(buf, "%.*P", p); // expected-warning {{field precision should have type 'int', but argument has type 'void *'}}
20  __builtin_os_log_format(buf, "%.*P", i, p);
21  __builtin_os_log_format(buf, "%.*P", i, i); // expected-warning {{format specifies type 'void *' but the argument has type 'int'}}
22  __builtin_os_log_format(buf, "%n");         // expected-error {{os_log() '%n' format specifier is not allowed}}
23  __builtin_os_log_format(buf, pc);           // expected-error {{os_log() format argument is not a string constant}}
24
25  printf("%{private}s", pc); // expected-warning {{using 'private' format specifier annotation outside of os_log()/os_trace()}}
26  __builtin_os_log_format(buf, "%{private}s", pc);
27
28  // <rdar://problem/23835805>
29  __builtin_os_log_format_buffer_size("no-args");
30  __builtin_os_log_format(buf, "%s", "hi");
31
32  // <rdar://problem/24828090>
33  wchar_t wc = 'a';
34  __builtin_os_log_format(buf, "%C", wc);
35  printf("%C", wc);
36  wchar_t wcs[] = {'a', 0};
37  __builtin_os_log_format(buf, "%S", wcs);
38  printf("%S", wcs);
39
40  struct { char data[0x100]; } toobig;
41  __builtin_os_log_format(buf, "%s", toobig); // expected-error {{os_log() argument 2 is too big (256 bytes, max 255)}}
42
43  __builtin_os_log_format(buf, "%{mask.xyz}s", "abc");
44  __builtin_os_log_format(buf, "%{mask.}s", "abc"); // expected-error {{mask type size must be between 1-byte and 8-bytes}}
45  __builtin_os_log_format(buf, "%{mask.abcdefghi}s", "abc"); // expected-error {{mask type size must be between 1-byte and 8-bytes}}
46}
47
48// Test os_log_format primitive with ObjC string literal format argument.
49void test_objc(const char *pc, int i, void *p, void *buf, NSString *nss) {
50  __builtin_os_log_format(buf, @"");
51  __builtin_os_log_format(buf, @"%d"); // expected-warning {{more '%' conversions than data arguments}}
52  __builtin_os_log_format(buf, @"%d", i);
53  __builtin_os_log_format(buf, @"%P", p); // expected-warning {{using '%P' format specifier without precision}}
54  __builtin_os_log_format(buf, @"%.10P", p);
55  __builtin_os_log_format(buf, @"%.*P", p); // expected-warning {{field precision should have type 'int', but argument has type 'void *'}}
56  __builtin_os_log_format(buf, @"%.*P", i, p);
57  __builtin_os_log_format(buf, @"%.*P", i, i); // expected-warning {{format specifies type 'void *' but the argument has type 'int'}}
58
59  __builtin_os_log_format(buf, @"%{private}s", pc);
60  __builtin_os_log_format(buf, @"%@", nss);
61}
62
63// Test the os_log format attribute.
64void MyOSLog(const char *format, ...) __attribute__((format(os_log, 1, 2)));
65void test_attribute(void *p) {
66  MyOSLog("%s\n", "Hello");
67  MyOSLog("%d");    // expected-warning {{more '%' conversions than data arguments}}
68  MyOSLog("%P", p); // expected-warning {{using '%P' format specifier without precision}}
69}
70