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131
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1 /* Exercise that -Warray-bounds is handled correctly for subobjects.
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2 Test case derived from the halt_fast_timekeeper function in Linux
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3 kernel/time/timekeeping.c.
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4 { dg-do compile }
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5 { dg-options "-O2 -Warray-bounds=2 -Wno-stringop-overflow -ftrack-macro-expansion=0" } */
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6
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7 struct A
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8 {
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9 int i;
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10 void *p;
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11 int j;
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12 };
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13
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14 struct B
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15 {
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16 struct A a;
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17
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18 int i;
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19 };
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20
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21 void sink (void*);
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22
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23 static void halt_fast_timekeeper (struct B *b)
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24 {
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25 static struct A a;
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26
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27 struct A *pa = &b->a;
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28
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29 __builtin_memcpy (&a, pa, sizeof *pa); /* { dg-bogus "\\\[-Warray-bounds" } */
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30 sink (&a);
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31 }
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32
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33 struct C { int i; struct B b; } c;
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34
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35 void timekeeping_suspend (void)
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36 {
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37 struct B *p = &c.b;
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38
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39 halt_fast_timekeeper (p);
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40 }
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