$ gfortran -flto gfortran.dg/dynamic_dispatch_5.f03 gfortran.dg/dynamic_dispatch_5.f03: In function 'MAIN__': gfortran.dg/dynamic_dispatch_5.f03:175:0: internal compiler error: in gfc_conv_component_ref, at fortran/trans-expr.c:466
It already occurs for -fwhole-file
The problem appears to be a lack of a backend_decl with -fwhole-file: Breakpoint 1, fancy_abort (file=0xd474a0 "../../trunk/gcc/fortran/trans-expr.c", line=466, function=0xd47e40 "gfc_conv_component_ref") at ../../trunk/gcc/diagnostic.c:727 727 { (gdb) up #1 0x0000000000557e63 in gfc_conv_component_ref () at ../../trunk/gcc/fortran/trans-expr.c:466 466 gcc_assert (c->backend_decl); (gdb) p c->backend_decl $1 = (tree) 0x0 (gdb) p *c $2 = {name = 0x7ffff5d0af18 "$vptr", ts = {type = BT_DERIVED, kind = 0, u = {derived = 0x13d11b0, cl = 0x13d11b0}, interface = 0x0, is_c_interop = 0, is_iso_c = 0, f90_type = BT_DERIVED}, attr = { allocatable = 0, dimension = 0, external = 0, intrinsic = 0, optional = 0, pointer = 1, target = 0, value = 0, volatile_ = 0, temporary = 0, dummy = 0, result = 0, assign = 0, threadprivate = 0, not_always_present = 0, implied_index = 0, subref_array_pointer = 0, proc_pointer = 0, asynchronous = 0, class_pointer = 0, save = SAVE_NONE, data = 0, is_protected = 0, use_assoc = 0, use_only = 0, use_rename = 0, imported = 0, in_namelist = 0, in_common = 0, in_equivalence = 0, function = 0, subroutine = 0, procedure = 0, generic = 0, generic_copy = 0, implicit_type = 0, untyped = 0, is_bind_c = 0, extension = 0, is_class = 0, class_ok = 0, vtab = 0, is_c_interop = 0, is_iso_c = 0, sequence = 0, elemental = 0, pure = 0, recursive = 0, unmaskable = 0, masked = 0, contained = 0, mod_proc = 0, abstract = 0, noreturn = 0, entry = 0, entry_master = 0, mixed_entry_master = 0, always_explicit = 0, referenced = 0, is_main_program = 0, access = ACCESS_UNKNOWN, intent = INTENT_UNKNOWN, flavor = FL_UNKNOWN, if_source = IFSRC_UNKNOWN, proc = PROC_UNKNOWN, cray_pointer = 0, cray_pointee = 0, alloc_comp = 0, pointer_comp = 0, proc_pointer_comp = 0, private_comp = 0, zero_comp = 0, ext_attr = 0, volatile_ns = 0x0, asynchronous_ns = 0x0}, as = 0x0, backend_decl = 0x0, loc = {nextc = 0x0, lb = 0x0}, initializer = 0x13d06e0, next = 0x0, formal = 0x0, formal_ns = 0x0, tb = 0x0} Confirmed.
Subject: Bug 43039 Author: pault Date: Thu Mar 18 21:23:35 2010 New Revision: 157552 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157552 Log: 2010-03-18 Paul Thomas <pault@gcc.gnu.org> PR fortran/43039 * trans-expr.c (conv_parent_component_references): Ensure that 'dt' has a backend_decl. PR fortran/43043 * trans-expr.c (gfc_conv_structure): Ensure that the derived type has a backend_decl. PR fortran/43044 * resolve.c (resolve_global_procedure): Check that the 'cl' structure is not NULL. Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/resolve.c trunk/gcc/fortran/trans-expr.c
Fixed on trunk. Thanks for the report. Paul
Revision 157552 does not fix the ICE for gfortran.dg/dynamic_dispatch_5.f03 with -fwhole-file on the fortran-dev branch: /opt/gcc/work/gcc/testsuite/gfortran.dg/dynamic_dispatch_5.f03:32:0: internal compiler error: in gfc_create_module_variable, at fortran/trans-decl.c:3393
Problem is slightly different on fortran-dev, as Dominique says in comment #5. Paul