[GROOVY-5720] Static Typechecking of Comparison Operations (e. g. '<') Not Strict Enough

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.1
• Fix Version/s: 2.0.6
• Component/s: Static Type Checker
• Environment: Groovy 2.0.1, Java 6 VM (no indication of correction for 2.0.2 found)
• Assignee: Cédric Champeau
• Reporter: Frank Plassmeier
• Created: 21/Sep/12 06:46
• Updated: 22/Dec/12 01:10
• Resolved: 22/Nov/12 06:20

Description

For classes implementing Comparable (e. g. String) calls to 'compareTo()' with single either directly or through operator like '<' are not detected as incorrect if the argument is on the wrong type (e. g. 'ab' < 1 is accepted).

Note: Attached test source is modification of standard test delivered with Groovy 2.0.1