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150
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1 // RUN: %clang_cc1 %s -Eonly -Werror=undef -verify
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2
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3 extern int x;
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4
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5 #if foo // expected-error {{'foo' is not defined, evaluates to 0}}
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6 #endif
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7
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252
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8 // expected-warning@+2 {{use of a '#elifdef' directive is a C23 extension}}
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150
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9 #ifdef foo
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221
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10 #elifdef foo
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150
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11 #endif
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12
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13 #if defined(foo)
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14 #endif
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15
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16
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17 // PR3938
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252
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18 // expected-warning@+3 {{use of a '#elifdef' directive is a C23 extension}}
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150
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19 #if 0
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20 #ifdef D
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221
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21 #elifdef D
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150
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22 #else 1 // Should not warn due to C99 6.10p4
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23 #endif
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24 #endif
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25
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26 // rdar://9475098
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27 #if 0
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28 #else 1 // expected-warning {{extra tokens}}
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29 #endif
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30
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31 // PR6852
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32 #if 'somesillylongthing' // expected-warning {{character constant too long for its type}} \
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33 // expected-warning {{multi-character character constant}}
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34 #endif
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