[GROOVY-9893] Wrong overloaded method selected

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.14
• Fix Version/s: 3.0.8, 4.0.0-alpha-3, 2.5.19
• Component/s: Static compilation
• Assignee: Eric Milles
• Reporter: Mauro Molinari
• Created: 11/Jan/21 17:49
• Updated: 25/Aug/22 21:52
• Resolved: 02/Mar/21 18:16

Description

Consider the attached example, unzip and run with:

./gradlew run

A test-compilestatic.xls file will be created in your home directory. Open it with Excel, OpenOffice or LibreOffice: you'll see that the two cells have been filled with a TRUE() value.

However, I would have expected the 'aaa' and 'bbb' strings to be put in there.

By debugging, you'll see that the call to:

headerCell.cellValue = header[i]

will invoke org.apache.poi.hssf.usermodel.HSSFCell.setCellValue(boolean) instead of org.apache.poi.ss.usermodel.CellBase.setCellValue(String), which is what I would have expected, since header is a list of String values.

Please note that the Groovy tooling for Eclipse correctly identifies that call as one to the latter method. Also, if you remove the leading @CompileStatic annotation and re-run, you'll get the correct result.