format-strings-fixit.c revision 45f9b7e8f23072d662ee1cc758f4ecb0da5e3322 
1// RUN: cp %s %t
2// RUN: %clang_cc1 -pedantic -Wall -fixit %t || true
3// RUN: %clang_cc1 -fsyntax-only -pedantic -Wall -Werror %t
4
5/* This is a test of the various code modification hints that are
6   provided as part of warning or extension diagnostics. All of the
7   warnings will be fixed by -fixit, and the resulting file should
8   compile cleanly with -Werror -pedantic. */
9
10int printf(char const *, ...);
11
12void test() {
13  // Basic types
14  printf("%s", (int) 123);
15  printf("abc%0f", "testing testing 123");
16  printf("%u", (long) -12);
17  printf("%p", 123);
18  printf("%c\n", "x");
19  printf("%c\n", 1.23);
20
21  // Larger types
22  printf("%+.2d", (unsigned long long) 123456);
23  printf("%1d", (long double) 1.23);
24
25  // Flag handling
26  printf("%0+s", (unsigned) 31337); // 0 flag should stay
27  printf("%#p", (void *) 0);
28  printf("% +f", 1.23); // + flag should stay
29  printf("%0-f", 1.23); // - flag should stay
30
31  // Positional arguments
32  printf("%1$f:%2$.*3$f:%4$.*3$f\n", 1, 2, 3, 4);
33
34  // Precision
35  printf("%10.5d", 1l); // (bug 7394)
36  printf("%.2c", 'a');
37
38  // Ignored flags
39  printf("%0-f", 1.23);
40
41  // Bad length modifiers
42  printf("%hhs", "foo");
43  printf("%1$zp", (void *)0);
44}
45