1 | /* RUN: %clang_cc1 -E %s -DNO_ERRORS -Werror -Wundef |
2 | RUN: not %clang_cc1 -E %s |
3 | */ |
4 | |
5 | #ifdef NO_ERRORS |
6 | /* None of these divisions by zero are in live parts of the expression, do not |
7 | emit any diagnostics. */ |
8 | |
9 | #define MACRO_0 0 |
10 | #define MACRO_1 1 |
11 | |
12 | #if MACRO_0 && 10 / MACRO_0 |
13 | foo |
14 | #endif |
15 | |
16 | #if MACRO_1 || 10 / MACRO_0 |
17 | bar |
18 | #endif |
19 | |
20 | #if 0 ? 124/0 : 42 |
21 | #endif |
22 | |
23 | // PR2279 |
24 | #if 0 ? 1/0: 2 |
25 | #else |
26 | #error |
27 | #endif |
28 | |
29 | // PR2279 |
30 | #if 1 ? 2 ? 3 : 4 : 5 |
31 | #endif |
32 | |
33 | // PR2284 |
34 | #if 1 ? 0: 1 ? 1/0: 1/0 |
35 | #endif |
36 | |
37 | #else |
38 | |
39 | |
40 | /* The 1/0 is live, it should error out. */ |
41 | #if 0 && 1 ? 4 : 1 / 0 |
42 | baz |
43 | #endif |
44 | |
45 | |
46 | #endif |
47 | |
48 | // rdar://6505352 |
49 | // -Wundef should not warn about use of undefined identifier if not live. |
50 | #if (!defined(XXX) || XXX > 42) |
51 | #endif |
52 | |
53 | |