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/* PR tree-optimization/42719 */
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/* { dg-do compile } */
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/* { dg-options "-O2 -ftracer -fcompare-debug" } */
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/* { dg-xfail-if "" { powerpc-ibm-aix* } { "*" } { "" } } */
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int *v;
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void
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foo (int a)
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{
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int i, j;
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for (j = i = a; i != -1; j = i, i = v[i])
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;
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v[j] = v[a];
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}
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