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150
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1 // RUN: %clang_cc1 -fsyntax-only -Wsigned-enum-bitfield -verify %s --std=c++11
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2
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3 // Enums used in bitfields with no explicitly specified underlying type.
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4 void test0() {
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5 enum E { E1, E2 };
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6 enum F { F1, F2 };
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7 struct { E e1 : 1; E e2; F f1 : 1; F f2; } s;
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8
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207
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9 s.e1 = E1; // expected-warning {{enums in the Microsoft ABI are signed integers by default; consider giving the enum 'E' an unsigned underlying type to make this code portable}}
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10 s.f1 = F1; // expected-warning {{enums in the Microsoft ABI are signed integers by default; consider giving the enum 'F' an unsigned underlying type to make this code portable}}
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150
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11
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12 s.e2 = E2;
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13 s.f2 = F2;
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14 }
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15
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16 // Enums used in bitfields with an explicit signed underlying type.
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17 void test1() {
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18 enum E : signed { E1, E2 };
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19 enum F : long { F1, F2 };
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20 struct { E e1 : 1; E e2; F f1 : 1; F f2; } s;
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21
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22 s.e1 = E1;
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23 s.f1 = F1;
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24
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25 s.e2 = E2;
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26 s.f2 = F2;
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27 }
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28
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29 // Enums used in bitfields with an explicitly unsigned underlying type.
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30 void test3() {
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31 enum E : unsigned { E1, E2 };
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32 enum F : unsigned long { F1, F2 };
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33 struct { E e1 : 1; E e2; F f1 : 1; F f2; } s;
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34
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35 s.e1 = E1;
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36 s.f1 = F1;
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37
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38 s.e2 = E2;
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39 s.f2 = F2;
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40 }
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