Fix warning with -Wsign-compare -Wsystem-headers

[official-gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / tailrecursion-3.c

/* { dg-do compile } */
/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr1-details" } */
int
t(int a)
{
        int r;
        if (a)
                r = t(a-1);
        else
                return 0;
        if (r)
                r=r;
        return r;
}
/* { dg-final { scan-tree-dump-times "Eliminated tail recursion" 1 "tailr1"} } */