BUG: ADQL translation fails with GROUP BY <func>

[agy-why]

This passes with PostgreSQL but fails with ADQL translation

SELECT 
       0.5 + FLOOR(LOG(mass)) AS logmass, 
       COUNT(*) AS num
       
  FROM mdr1.fof 
  
 WHERE snapnum = 85 
 GROUP BY FLOOR(LOG(mass)) 
 ORDER BY logmass

[kimakan]

AFAIK in ADQL, the group_by_term does not contain the math_function and therefore GROUP BY FLOOR(..) is not a valid ADQL query.