51 lines
1004 B
C
51 lines
1004 B
C
/* PR tree-optimization/57149 */
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/* { dg-do compile } */
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/* { dg-options "-Os -Wuninitialized" } */
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struct A { struct A *a, *b; };
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struct D { struct A e; };
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struct E { unsigned char f; struct { struct A e; } g; };
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struct F { struct E i[32]; };
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extern int fn0 (void);
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extern int fn1 (struct E *, struct D *);
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static inline __attribute__ ((always_inline)) int
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fn2 (const struct A *x)
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{
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return x->a == x;
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}
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static int
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fn3 (struct E *x)
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{
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struct D *l, *m;
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int retval = retval;
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if (fn2 (&x->g.e))
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return 0;
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for (l = (struct D *) x->g.e.a, m = (struct D *) l->e.a;
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&l->e != &x->g.e;
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l = m, m = (struct D *) m->e.a)
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retval = fn1 (x, l);
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return retval;
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}
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void
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fn4 (struct F *x, unsigned k)
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{
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unsigned i;
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for (i = 0; i < k; i++)
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{
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struct E *y = &x->i[i];
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int err = -22;
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err = fn3 (y);
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if (y->f == 0)
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{
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if (err > 0)
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err = fn0 ();
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if (err < 0) /* { dg-bogus "may be used uninitialized in this function" } */
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fn0 ();
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}
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}
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}
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