| Anna Zaks | f0267f5 | 2012-08-07 18:36:58 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=unix.cstring.BadSizeArg -analyzer-store=region -Wno-strncat-size -Wno-strlcpy-strlcat-size -Wno-sizeof-array-argument -Wno-sizeof-pointer-memaccess -verify %s |
| Anna Zaks | 87b6ff0 | 2012-01-31 19:33:39 +0000 | [diff] [blame] | 2 | |
| 3 | typedef __SIZE_TYPE__ size_t; |
| 4 | char *strncat(char *, const char *, size_t); |
| 5 | size_t strlen (const char *s); |
| 6 | |
| 7 | void testStrncat(const char *src) { |
| 8 | char dest[10]; |
| 9 | strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - 1); // expected-warning {{Potential buffer overflow. Replace with 'sizeof(dest) - strlen(dest) - 1' or use a safer 'strlcat' API}} |
| 10 | strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest)); // expected-warning {{Potential buffer overflow. Replace with}} |
| 11 | strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - strlen(dest)); // expected-warning {{Potential buffer overflow. Replace with}} |
| 12 | strncat(dest, src, sizeof(src)); // expected-warning {{Potential buffer overflow. Replace with}} |
| Gabor Horvath | 3b00853 | 2017-02-02 08:20:54 +0000 | [diff] [blame^] | 13 | // Should not crash when sizeof has a type argument. |
| 14 | strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(char)); |
| Anna Zaks | 87b6ff0 | 2012-01-31 19:33:39 +0000 | [diff] [blame] | 15 | } |