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111
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1 /* { dg-do run } */
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2
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3 extern "C" void abort (void);
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4 struct S { unsigned int i : 24; } x;
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5 void __attribute__((noinline)) test1()
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6 {
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7 if (--x.i != 0x00ffffff)
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8 abort ();
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9 if (x.i != 0x00ffffff)
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10 abort ();
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11 }
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12 void __attribute__((noinline)) test2()
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13 {
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14 if (x.i-- != 0)
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15 abort ();
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16 if (x.i != 0x00ffffff)
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17 abort ();
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18 }
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19 void __attribute__((noinline)) test3()
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20 {
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21 if (++x.i != 0)
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22 abort ();
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23 if (x.i != 0)
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24 abort ();
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25 }
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26 void __attribute__((noinline)) test4()
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27 {
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28 if (x.i++ != 0x00ffffff)
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29 abort ();
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30 if (x.i != 0)
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31 abort ();
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32 }
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33 int main()
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34 {
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35 x.i = 0;
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36 test1();
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37 x.i = 0;
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38 test2();
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39 x.i = 0x00ffffff;
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40 test3();
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41 x.i = 0x00ffffff;
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42 test4();
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43 return 0;
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44 }
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