[GROOVY-2972] groovy.lang.ObjectRange.size() disobeys its contract for large ranges of Long values.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.5.6, 1.6-beta-1
• Fix Version/s: 2.5.0-alpha-1
• Component/s: groovy-jdk
• Assignee: Paul King
• Reporter: Christian Semrau
• Created: 24/Jul/08 17:20
• Updated: 02/May/17 02:03
• Resolved: 29/Jun/16 03:25

Description

groovy.lang.ObjectRange.size() disobeys its contract for large ranges of Long values: "Returns the number of elements in this list. If this list contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE."

println (new ObjectRange(0L, (long)Integer.MAX_VALUE).size()) // -2147483648
println (new ObjectRange(0L, (2L<<32)-2).size()) // -1

A similar error is to be expected for BigDecimal ranges and other ranges larger than Integer.MAX_VALUE, though with other kinds of ranges the computation of size takes a while.

Expected behaviour:

assert Integer.MAX_VALUE == new ObjectRange(0L, Integer.MAX_VALUE + 1L).size()