38 lines
709 B
C
38 lines
709 B
C
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/* PR middle-end/30286 */
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/* { dg-do run } */
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/* { dg-options "-O2 -ftrapv" } */
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extern void abort (void);
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struct S { struct S *s; };
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struct T { struct S *t[25]; };
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void
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__attribute__((noinline))
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foo (int i, struct T *x, struct S *y)
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{
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int j;
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for (j = 14; j > i; j--)
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x->t[j] = y->s;
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}
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int
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main (void)
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{
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struct S s;
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struct T t;
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int i;
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s.s = &s;
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__builtin_memset (&t, 0, sizeof (t));
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foo (6, &t, &s);
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for (i = 0; i < 25; i++)
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if (t.t[i] != ((i > 6 && i <= 14) ? &s : (struct S *) 0))
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abort ();
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__builtin_memset (&t, 0, sizeof (t));
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foo (-1, &t, &s);
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for (i = 0; i < 25; i++)
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if (t.t[i] != ((i >= 0 && i <= 14) ? &s : (struct S *) 0))
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abort ();
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return 0;
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}
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