| Nico Weber | b2348f4 | 2016-01-19 15:15:31 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -E -CC -verify |
| 2 | // RUN: %clang_cc1 %s -E -CC -DPEDANTIC -pedantic -verify |
| Eli Friedman | b3bfd84 | 2011-08-03 00:04:13 +0000 | [diff] [blame] | 3 | |
| 4 | #define FOO && 1 |
| 5 | #if defined FOO FOO |
| 6 | #endif |
| Nico Weber | b2348f4 | 2016-01-19 15:15:31 +0000 | [diff] [blame] | 7 | |
| 8 | #define A |
| 9 | #define B defined(A) |
| 10 | #if B // expected-warning{{macro expansion producing 'defined' has undefined behavior}} |
| 11 | #endif |
| 12 | |
| 13 | #define m_foo |
| 14 | #define TEST(a) (defined(m_##a) && a) |
| 15 | |
| 16 | #if defined(PEDANTIC) |
| 17 | // expected-warning@+4{{macro expansion producing 'defined' has undefined behavior}} |
| 18 | #endif |
| 19 | |
| 20 | // This shouldn't warn by default, only with pedantic: |
| 21 | #if TEST(foo) |
| 22 | #endif |
| 23 | |
| 24 | |
| 25 | // Only one diagnostic for this case: |
| 26 | #define INVALID defined( |
| 27 | #if INVALID // expected-error{{macro name missing}} |
| 28 | #endif |