http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18918
--- Comment #67 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-08-18 15:14:10 UTC --- The LOCK_TYPE issues (cf. comment 62) are now fixed. Except for a few bugs and for lacking support of polymorphic coarrays (which depends on polymorphic array support), all coarray features should work in the single image mode. Hence, this PR has done its duty and I close it as FIXED. For the pending issues, see http://gcc.gnu.org/wiki/Coarray Thanks for your patience with this PR (which was reported almost 7 years ago - even before the work on the Fortran 2008 has started).