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