The comma after the "P" is optional in Fortran 2003 if followed by a repeat specifier but required in Fortran 95. (According to MR&C)
-- Summary: -std=f95: Reject "1P2E12.4" w/o a comma after the "P" Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: diagnostic Severity: enhancement Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: burnus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35754