Consider the following code: module m
type :: t contains procedure, nopass :: a procedure, nopass :: b end type contains real function a (x) real :: x a = 2.*x end function real function b (x) real :: x b = 3.*x end function subroutine s class(t),allocatable :: x real :: r allocate(x) r = x%a (1.1) ! works r = x%a ( b(1.2)) ! works r = b ( x%a (1.3)) ! works r = x%a(x%b(1.4)) ! fails end subroutine end The line marked with "fails" triggers the following error (with trunk r152720): end 1 Internal Error at (1): free_expr0(): Bad expr type Backtrace: Breakpoint 1, free_expr0 (e=0x1bd70e0) at /home/jweil/gcc45/trunk/gcc/fortran/expr.c:209 209 gfc_internal_error ("free_expr0(): Bad expr type"); (gdb) bt #0 free_expr0 (e=0x1bd70e0) at /home/jweil/gcc45/trunk/gcc/fortran/expr.c:209 #1 0x00000000004c54ba in gfc_free_expr (e=0x1bd70e0) at /home/jweil/gcc45/trunk/gcc/fortran/expr.c:236 #2 0x000000000051e205 in resolve_class_compcall (e=0x1bd47f0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:5237 #3 0x000000000051e6d3 in gfc_resolve_expr (e=0x1bd47f0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:5391 #4 0x0000000000522405 in resolve_code (code=0x1bd5330, ns=0x1bd1ea0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:7601 #5 0x000000000052b5fb in resolve_codes (ns=0x1bd1ea0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:11931 #6 0x000000000052b518 in resolve_codes (ns=0x1bce0d0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:11921 #7 0x000000000052b6f0 in gfc_resolve (ns=0x1bce0d0) at /home/jweil/gcc45/trunk/gcc/fortran/resolve.c:11958 #8 0x000000000050dd80 in gfc_parse_file () at /home/jweil/gcc45/trunk/gcc/fortran/parse.c:4195 #9 0x000000000054aaf4 in gfc_be_parse_file (set_yydebug=0) at /home/jweil/gcc45/trunk/gcc/fortran/f95-lang.c:239 #10 0x00000000009b492d in compile_file () at /home/jweil/gcc45/trunk/gcc/toplev.c:1049 #11 0x00000000009b6c19 in do_compile () at /home/jweil/gcc45/trunk/gcc/toplev.c:2408 #12 0x00000000009b6cda in toplev_main (argc=2, argv=0x7fff1c893c48) at /home/jweil/gcc45/trunk/gcc/toplev.c:2450 #13 0x00000000005c814f in main (argc=2, argv=0x7fff1c893c48) at /home/jweil/gcc45/trunk/gcc/main.c:35 -- Summary: [OOP] Calling one TBP as an actual argument of another TBP Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41706