| 1 | // RUN: %clang_cc1 %s -E -CC -verify |
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| 2 | // RUN: %clang_cc1 %s -E -CC -DPEDANTIC -pedantic -verify |
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| 3 | |
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| 4 | #define FOO && 1 |
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| 5 | #if defined FOO FOO |
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| 6 | #endif |
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| 7 | |
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| 8 | #define A |
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| 9 | #define B defined(A) |
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| 10 | #if B // expected-warning{{macro expansion producing 'defined' has undefined behavior}} |
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| 11 | #endif |
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| 12 | |
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| 13 | #define m_foo |
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| 14 | #define TEST(a) (defined(m_##a) && a) |
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| 15 | |
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| 16 | #if defined(PEDANTIC) |
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| 17 | // expected-warning@+4{{macro expansion producing 'defined' has undefined behavior}} |
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| 18 | #endif |
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| 19 | |
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| 20 | // This shouldn't warn by default, only with pedantic: |
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| 21 | #if TEST(foo) |
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| 22 | #endif |
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| 23 | |
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| 24 | |
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| 25 | // Only one diagnostic for this case: |
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| 26 | #define INVALID defined( |
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| 27 | #if INVALID // expected-error{{macro name missing}} |
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| 28 | #endif |
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| 29 | |
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