1 | // RUN: %clangxx_msan -g %s -o %t |
2 | // RUN: %run %t |
3 | // RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK-FPUTS |
4 | // RUN: not %run %t 3 3 2>&1 | FileCheck %s --check-prefix=CHECK-PUTS |
5 | |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | |
10 | int test_fgets() { |
11 | FILE *fp = fopen(filename: "/dev/zero" , modes: "r" ); |
12 | char c; |
13 | |
14 | if (!fgets(s: &c, n: 1, stream: fp)) |
15 | return 1; |
16 | |
17 | if (c == '1') // No error |
18 | return 2; |
19 | |
20 | fclose(stream: fp); |
21 | return 0; |
22 | } |
23 | |
24 | int test_fputs() { |
25 | FILE *fp = fopen(filename: "/dev/null" , modes: "w" ); |
26 | char buf[2]; |
27 | fputs(s: buf, stream: fp); // BOOM |
28 | return fclose(stream: fp); |
29 | } |
30 | |
31 | void test_puts() { |
32 | char buf[2]; |
33 | puts(s: buf); // BOOM |
34 | } |
35 | |
36 | int main(int argc, char *argv[]) { |
37 | if (argc == 1) |
38 | test_fgets(); |
39 | else if (argc == 2) |
40 | test_fputs(); |
41 | else |
42 | test_puts(); |
43 | return 0; |
44 | } |
45 | |
46 | // CHECK-FPUTS: Uninitialized bytes in fputs at offset 0 inside |
47 | // CHECK-PUTS: Uninitialized bytes in puts at offset 0 inside |
48 | |