errorFmtFunc = f
}

// uniq swaps away duplicate elements in data, returning the size of the
// unique set. data is expected to be pre-sorted, and the resulting set in
// the range [0:size] will remain in sorted order. Uniq, following a
// sort.Sort call, can be used to prepare arbitrary inputs for use as sets.
func uniq(data sort.Interface) (size int) {
	p, l := 0, data.Len()
	if l <= 1 {
		return l
	}

	for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
		if remain == 0 {
			cache, remain = src.Int63(), letterIdxMax
		}
		if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
			b[i] = letterBytes[idx]
			i--
		}
		cache >>= letterIdxBits
		remain--
	}

	return *(*string)(unsafe.Pointer(&b))
}

        assertSame(trans1, result);

        // Verify fail count incremented for addr2 (was 1, now 2)
        assertEquals(2, poolSpy.failCounts.get("10.0.0.2"));
        // addr1's count should remain unchanged since it succeeded
        assertEquals(5, poolSpy.failCounts.get("10.0.0.1"));
    }

    @Test
    @DisplayName("Should throw UnknownHostException for empty address list")

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