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111
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1 /* Test for -Wtraditional warnings on union initialization.
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2 Note, gcc should omit these warnings in system header files.
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3 By Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 9/11/2000. */
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4 /* { dg-do compile } */
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5 /* { dg-options "-Wtraditional" } */
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6
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7 union foo1
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8 {
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9 float f;
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10 int i;
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11 long l;
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12 };
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13
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14 union foo2
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15 {
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16 int i;
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17 float f;
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18 long l;
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19 };
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20
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21 void
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22 testfunc ()
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23 {
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24 /* Note we only warn for nonzero initializers. */
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25 static union foo1 f1 = {0};
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26 static union foo2 f2 = {0};
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27 static union foo1 f3 = {1}; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
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28 static union foo2 f4 = {1}; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
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29 static union foo1 f5 = {0.0};
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30 static union foo2 f6 = {0.0};
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31 static union foo1 f7 = {1.0}; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
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32 static union foo2 f8 = {1.0}; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
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33
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34 # 35 "sys-header.h" 3
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35 /* We are in system headers now, no -Wtraditional warnings should issue. */
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36
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37 static union foo1 b1 = {0};
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38 static union foo2 b2 = {0};
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39 static union foo1 b3 = {1};
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40 static union foo2 b4 = {1};
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41 static union foo1 b5 = {0.0};
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42 static union foo2 b6 = {0.0};
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43 static union foo1 b7 = {1.0};
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44 static union foo2 b8 = {1.0};
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45 }
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