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111
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1 /* Test for bitfield alignment in structs and unions. */
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2 /* { dg-do run { target pcc_bitfield_type_matters } } */
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3 /* { dg-options "-O2" } */
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4
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5 extern void abort (void);
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6 extern void exit (int);
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7
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8 typedef long la __attribute__((aligned (8)));
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9
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10 struct A
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11 {
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12 char a;
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13 union UA
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14 {
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15 char x;
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16 la y : 6;
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17 } b;
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18 char c;
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19 } a;
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20
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21 struct B
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22 {
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23 char a;
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24 union UB
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25 {
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26 char x;
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27 long y : 6 __attribute__((aligned (8)));
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28 } b;
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29 char c;
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30 } b;
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31
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32 struct C
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33 {
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34 char a;
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35 struct UC
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36 {
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37 la y : 6;
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38 } b;
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39 char c;
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40 } c;
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41
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42 struct D
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43 {
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44 char a;
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45 struct UD
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46 {
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47 long y : 6 __attribute__((aligned (8)));
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48 } b;
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49 char c;
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50 } d;
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51
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52 int main (void)
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53 {
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54 if (sizeof (a) != sizeof (b))
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55 abort ();
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56 if (sizeof (a) != sizeof (c))
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57 abort ();
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58 if (sizeof (a) != sizeof (d))
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59 abort ();
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60 if ((&a.c - &a.a) != (&b.c - &b.a))
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61 abort ();
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62 if ((&a.c - &a.a) != (&c.c - &c.a))
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63 abort ();
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64 if ((&a.c - &a.a) != (&d.c - &d.a))
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65 abort ();
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66 exit (0);
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67 }
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