> This is now: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54832
... which I have just fixed by an (obvious and regtested) patch: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192160 Thanks again for reporting this, Janus > 2012/10/6 Rouson, Damian <rou...@sandia.gov>: >> The Gfortran 4.8.0 20120930 ICE shown below appears to stem from the >> "result" keyword used in the first interface body. The code works fine >> with gfortran 4.7.2. This is a simplified version of code from my book: >> >> $ cat integrand.F90 >> module integrand_module >> >> type ,abstract :: integrand >> contains >> procedure(t_interface), deferred :: t >> procedure(assign_interface), deferred :: assign >> procedure(times_interface), deferred :: times >> generic :: operator(*) => times >> generic :: assignment(=) => assign >> end type >> >> abstract interface >> function t_interface(this) result(dState_dt) >> import :: integrand >> class(integrand) ,intent(in) :: this >> class(integrand) ,allocatable :: dState_dt >> end function >> function times_interface(lhs,rhs) >> import :: integrand >> class(integrand) ,intent(in) :: lhs >> class(integrand) ,allocatable :: times_interface >> real, intent(in) :: rhs >> end function >> subroutine assign_interface(lhs,rhs) >> import :: integrand >> class(integrand) ,intent(in) :: rhs >> class(integrand) ,intent(inout) :: lhs >> end subroutine >> end interface >> >> contains >> subroutine integrate(model,dt) >> class(integrand) :: model >> real dt >> model = model%t()*dt >> end subroutine >> end module >> $ gfortran -c integrand.F90 >> integrand.F90: In function 'integrate': >> integrand.F90:35:0: internal compiler error: in gfc_conv_expr, at >> fortran/trans-expr.c:5862 >> model = model%t()*dt >> ^ >> >> integrand.F90:35:0: internal compiler error: Abort trap: 6 >> gfortran: internal compiler error: Abort trap: 6 (program f951) >> Abort trap: 6 >> remote-ca41:gnu-regression rouson$ gfortran --version >> GNU Fortran (MacPorts gcc48 4.8-20120930_1) 4.8.0 20120930 (experimental) >> Copyright (C) 2012 Free Software Foundation, Inc. >> >> >>