created an attachment (id=157882)
report design

description:
  birt function birtdatetime.week return a wrong value.

test build:
birt2.6.0 v20100202-1304

step to reproduce:

1. use the report attached
2. preview it

expect result:
"may 9, 2005 12:00 am" is 20th week of year 2005

actual result:
19 was returned
please take a look to see whether this is caused by change of icu behavior.
the "unexpected" result is caused by the upgrading of icu rather than birt itself.

so mark it as wontfix.