hibernate/hibernate-orm · error · IllegalArgumentException

Expecting 8 byte values to construct a long

Error message

Expecting 8 byte values to construct a long

What it means

Error "Expecting 8 byte values to construct a long" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/internal/util/BytesHelper.java:117

	public static long asLong(byte[] bytes) {
		return asLong(bytes, 0);
	}

	/**
	 * Interpret the binary representation of a long.
	 *
	 * @param bytes The bytes to interpret.
	 * @param srcPos starting position in the source array.
	 *
	 * @return The long
	 */
	public static long asLong(byte[] bytes, int srcPos) {
		if ( bytes == null ) {
			return 0;
		}
		final int size = srcPos + 8;
		if ( bytes.length < size ) {
			throw new IllegalArgumentException( "Expecting 8 byte values to construct a long" );
		}
		long value = 0;
		for (int i=srcPos; i<size; i++) {
			value = (value << 8) | (bytes[i] & 0xff);
		}
		return value;
	}

	public static String toBinaryString(byte value) {
		String formatted = Integer.toBinaryString( value );
		if ( formatted.length() > 8 ) {
			formatted = formatted.substring( formatted.length() - 8 );
		}
		StringBuilder buf = new StringBuilder( "00000000" );
		buf.replace( 8 - formatted.length(), 8, formatted );
		return buf.toString();
	}

View on GitHub (pinned to fad1729dce)

Solutions

1. Pass exactly 8 bytes to asLong(); validate array length before conversion.

When it happens

Trigger: Thrown at hibernate-core/src/main/java/org/hibernate/internal/util/BytesHelper.java:117 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/634d3db6eb18e437. Report an issue: GitHub.