gfortran issues an "Unclassifiable statement" error when trying to compile a statement with concatenation of substrings of character variables.
-- Summary: Unclassifiable statement on character substring concatenation Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: toon at moene dot indiv dot nluug dot nl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24643