// Add input readahead.
		// We use 2 buffers, so we always have a full buffer of input.
		pool := globalBytePoolCap.Load()
		bufA := pool.Get()
		bufB := pool.Get()
		defer pool.Put(bufA)
		defer pool.Put(bufB)
		ra, err := readahead.NewReaderBuffer(data, [][]byte{bufA[:fi.Erasure.BlockSize], bufB[:fi.Erasure.BlockSize]})
		if err == nil {
			toEncode = ra
			defer ra.Close()
		}
	}

	if data.Size() >= bigFileThreshold {
		// We use 2 buffers, so we always have a full buffer of input.
		pool := globalBytePoolCap.Load()
		bufA := pool.Get()
		bufB := pool.Get()
		defer pool.Put(bufA)
		defer pool.Put(bufB)
		ra, err := readahead.NewReaderBuffer(data, [][]byte{bufA[:fi.Erasure.BlockSize], bufB[:fi.Erasure.BlockSize]})
		if err == nil {
			toEncode = ra
			defer ra.Close()
		}
		bugLogIf(ctx, err)

		{"ends-with-a-dash-", false},
		{"-starts-with-a-dash", false},
		{"THIS-BEGINS-WITH-UPPERCASe", false},
		{"tHIS-ENDS-WITH-UPPERCASE", false},
		{"ThisBeginsAndEndsWithUpperCasE", false},
		{"una ñina", false},
		{"dash-.may-not-appear-next-to-dot", false},
		{"dash.-may-not-appear-next-to-dot", false},
		{"dash-.-may-not-appear-next-to-dot", false},

		{"ends-with-a-dot.", true},
		{"ends-with-a-dash-", true},
		{"-starts-with-a-dash", true},
		{"THIS-BEINGS-WITH-UPPERCASe", true},
		{"tHIS-ENDS-WITH-UPPERCASE", true},
		{"ThisBeginsAndEndsWithUpperCase", true},
		{"una ñina", true},
		{"lalalallalallalalalallalallalala-theString-size-is-greater-than-64", true},
		// cases for which test should fail.
		// passing invalid bucket names.
		{"", false},
		{SlashSeparator, false},

fixed // size lets us avoid heap allocations. if len(a) > 72 { panic("crypto/ecdh: internal error: isLess input too large") } bufA, bufB := make([]byte, 72), make([]byte, 72) for i := range a { bufA[i], bufB[i] = a[len(a)-i-1], b[len(b)-i-1] } // Perform a subtraction with borrow. var borrow uint64 for i := 0; i < len(bufA); i += 8 { limbA, limbB := byteorder.LEUint64(bufA[i:]), byteorder.LEUint64(bufB[i:]) _, borrow = bits.Sub64(limbA, limbB, borrow) } // If there is a borrow at the end of the operation,...

fixed // size lets us avoid heap allocations. if len(a) > 72 { panic("crypto/ecdh: internal error: isLess input too large") } bufA, bufB := make([]byte, 72), make([]byte, 72) for i := range a { bufA[i], bufB[i] = a[len(a)-i-1], b[len(b)-i-1] } // Perform a subtraction with borrow. var borrow uint64 for i := 0; i < len(bufA); i += 8 { limbA, limbB := byteorder.LEUint64(bufA[i:]), byteorder.LEUint64(bufB[i:]) _, borrow = bits.Sub64(limbA, limbB, borrow) } // If there is a borrow at the end of the operation,...