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150
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1 // RUN: %clang_cc1 -fsyntax-only -verify %s
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2
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3 // Test checks that 'mode' attribute is handled correctly with enums, i. e. code
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4 // 1. "typedef enum { A } __attribute__((mode(HI))) T;" is accepted,
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5 // 2. "enum X __attribute__((mode(QI))) var;" forms a complete integer type.
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6 // 3. "enum { A } __attribute__((mode(V4SI))) var;" is not accepted (vector mode).
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7
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8 typedef enum { E4 } EnumType;
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9
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10 int main() {
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11 // Vector mode are not allowed with enums.
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12 typedef enum { E1 } __attribute__((mode(V4QI))) RejectedType1; // expected-error{{mode 'V4QI' is not supported for enumeration types}}
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13 // expected-warning@-1{{specifying vector types with the 'mode' attribute is deprecated}}
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14 typedef enum __attribute__((mode(V8HI))) { E2 } RejectedType2; // expected-error{{mode 'V8HI' is not supported for enumeration types}}
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15 // expected-warning@-1{{deprecated}}
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16 typedef enum E3 __attribute__((mode(V2SI))) RejectedType3; // expected-error{{mode 'V2SI' is not supported for enumeration types}}
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17 // expected-warning@-1{{deprecated}}
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18 typedef EnumType __attribute__((mode(V4DI))) RejectedType4; // expected-error{{mode 'V4DI' is not supported for enumeration types}}
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19 // expected-warning@-1{{deprecated}}
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20 EnumType v1 __attribute__((mode(V4QI))); // expected-error{{mode 'V4QI' is not supported for enumeration types}}
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21 // expected-warning@-1{{deprecated}}
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22 enum __attribute__((mode(V8HI))) { E5 } v2; // expected-error{{mode 'V8HI' is not supported for enumeration types}}
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23 // expected-warning@-1{{deprecated}}
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24
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25 // Incomplete enums without mode attribute are not allowed.
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26 typedef enum Y IncompleteYType; // expected-note{{forward declaration of 'enum Y'}}
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27
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28 enum X a1; // expected-error{{variable has incomplete type 'enum X'}}
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29 // expected-note@-1{{forward declaration of 'enum X'}}
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30 IncompleteYType a2; // expected-error{{variable has incomplete type 'IncompleteYType' (aka 'enum Y')}}
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31
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32 // OK with 'mode' attribute.
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33 typedef enum Y __attribute__((mode(QI))) CompleteYType1;
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34 typedef enum Y CompleteYType2 __attribute__((mode(HI)));
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35 typedef enum { A1, B1 } __attribute__((mode(QI))) CompleteType3;
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36 typedef enum { A2, B2 } CompleteType4 __attribute__((mode(QI)));
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37 typedef enum __attribute__((mode(QI))) { A3, B3 } CompleteType5;
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38
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39 enum X __attribute__((mode(QI))) a3;
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40 enum X a4 __attribute__((mode(HI)));
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41 IncompleteYType __attribute__((mode(QI))) a5;
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42 IncompleteYType a6 __attribute__((mode(HI)));
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43 CompleteYType1 a7;
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44 CompleteYType2 a8;
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45 CompleteType3 a9;
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46 CompleteType4 a10;
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47 CompleteType5 a11;
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48 enum __attribute__((mode(QI))) { A4, B4 } a12;
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49
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50 return 0;
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51 }
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