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111
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1 /* PR tree-optimization/57149 */
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2 /* { dg-do compile } */
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3 /* { dg-options "-Os -Wuninitialized" } */
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4
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5 struct A { struct A *a, *b; };
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6 struct D { struct A e; };
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7 struct E { unsigned char f; struct { struct A e; } g; };
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8 struct F { struct E i[32]; };
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9
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10 extern int fn0 (void);
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11 extern int fn1 (struct E *, struct D *);
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12
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13 static inline __attribute__ ((always_inline)) int
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14 fn2 (const struct A *x)
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15 {
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16 return x->a == x;
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17 }
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18
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19 static int
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20 fn3 (struct E *x)
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21 {
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22 struct D *l, *m;
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23 int retval = retval;
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24 if (fn2 (&x->g.e))
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25 return 0;
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26 for (l = (struct D *) x->g.e.a, m = (struct D *) l->e.a;
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27 &l->e != &x->g.e;
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28 l = m, m = (struct D *) m->e.a)
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29 retval = fn1 (x, l);
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30 return retval;
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31 }
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32
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33 void
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34 fn4 (struct F *x, unsigned k)
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35 {
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36 unsigned i;
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37 for (i = 0; i < k; i++)
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38 {
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39 struct E *y = &x->i[i];
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40 int err = -22;
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41 err = fn3 (y);
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42 if (y->f == 0)
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43 {
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44 if (err > 0)
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45 err = fn0 ();
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46 if (err < 0) /* { dg-bogus "may be used uninitialized in this function" } */
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47 fn0 ();
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48 }
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49 }
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50 }
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