Found at http://de.wikibooks.org/wiki/Fortran:_Fortran_2003:_Zeiger
The following program gives an ICE: hjff.f90:4.34: procedure( up ), pointer :: pptr => null() 1 Error: Interface 'up' of procedure 'pptr' at (1) must be explicit hjff.f90:4.15: procedure( up ), pointer :: pptr => null() 1 Error: Symbol 'up' at (1) has no IMPLICIT type f951: internal compiler error: in resolve_specific_s0, at fortran/resolve.c:2758 Please submit a full bug report, program bsp implicit none procedure( up ), pointer :: pptr => null() pptr => ooops call pptr end program bsp -- Summary: ICE with invalid proc-pointer Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code Severity: normal 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=38290