http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56079
Bug #: 56079 Summary: [4.8 Regression] ICE with C_PTR renaming Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassig...@gcc.gnu.org ReportedBy: tkoe...@gcc.gnu.org Maybe related to PR 51578 and PR 55574. program gar_nichts use ISO_C_BINDING use ISO_C_BINDING, only: C_PTR use ISO_C_BINDING, only: abc => C_PTR use ISO_C_BINDING, only: xyz => C_PTR type(xyz) nada nada = transfer(C_NULL_PTR,nada) end program gar_nichts ig25@linux-fd1f:/tmp> gfortran nada6.f90 f951: interner Compiler-Fehler: Speicherzugriffsfehler 0x96349f crash_signal ../../trunk/gcc/toplev.c:332 0x5ab741 tree_check ../../trunk/gcc/tree.h:3668 0x5ab741 encode_derived ../../trunk/gcc/fortran/target-memory.c:242 0x5ab741 gfc_target_encode_expr(gfc_expr*, unsigned char*, unsigned long) ../../trunk/gcc/fortran/target-memory.c:319 0x5a2158 gfc_simplify_transfer(gfc_expr*, gfc_expr*, gfc_expr*) ../../trunk/gcc/fortran/simplify.c:6056 0x542f31 do_simplify ../../trunk/gcc/fortran/intrinsic.c:3817 0x550146 gfc_intrinsic_func_interface(gfc_expr*, int) ../../trunk/gcc/fortran/intrinsic.c:4160 0x58c0f6 resolve_unknown_f ../../trunk/gcc/fortran/resolve.c:2613 0x58c0f6 resolve_function ../../trunk/gcc/fortran/resolve.c:3214 0x58c0f6 gfc_resolve_expr(gfc_expr*) ../../trunk/gcc/fortran/resolve.c:6549 0x591699 resolve_code ../../trunk/gcc/fortran/resolve.c:10120 0x59421e resolve_codes ../../trunk/gcc/fortran/resolve.c:14963 0x585282 gfc_resolve ../../trunk/gcc/fortran/resolve.c:14991 0x579bc2 resolve_all_program_units ../../trunk/gcc/fortran/parse.c:4395 0x579bc2 gfc_parse_file() ../../trunk/gcc/fortran/parse.c:4662 0x5b5995 gfc_be_parse_file ../../trunk/gcc/fortran/f95-lang.c:189 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. ig25@linux-fd1f:/tmp> gdb ~/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/f951 GNU gdb (GDB) 7.5 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/ig25/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/f951...done. (gdb) r nada6.f90 Starting program: /home/ig25/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/f951 nada6.f90 warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? Program received signal SIGSEGV, Segmentation fault. encode_derived (buffer_size=8, buffer=0x7fffffffd6c0 "", source=<optimized out>) at ../../trunk/gcc/fortran/target-memory.c:242 242 ptr = TREE_INT_CST_LOW(DECL_FIELD_OFFSET(cmp->backend_decl)) (gdb) p cmp->backend_decl $1 = (tree) 0x0 (gdb) p *cmp $2 = {name = 0x7ffff6d5b310 "__xyz_c_address", ts = {type = BT_INTEGER, kind = 8, u = {derived = 0x0, cl = 0x0, pad = 0}, interface = 0x0, is_c_interop = 1, is_iso_c = 0, f90_type = BT_INTEGER, deferred = false}, attr = {allocatable = 0, dimension = 0, codimension = 0, external = 0, intrinsic = 0, optional = 0, pointer = 0, 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, contiguous = 0, class_pointer = 0, save = SAVE_NONE, data = 0, is_protected = 0, use_assoc = 0, use_only = 0, use_rename = 0, imported = 0, host_assoc = 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, vtype = 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, public_used = 0, implicit_pure = 0, noreturn = 0, entry = 0, entry_master = 0, mixed_entry_master = 0, always_explicit = 0, artificial = 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, coarray_comp = 0, lock_comp = 0, defined_assign_comp = 0, unlimited_polymorphic = 0, select_type_temporary = 0, ext_attr = 0, volatile_ns = 0x0, asynchronous_ns = 0x0}, as = 0x0, backend_decl = 0x0, norestrict_decl = 0x0, loc = { nextc = 0x15aa9ac, lb = 0x15aa970}, initializer = 0x0, next = 0x0, formal = 0x0, formal_ns = 0x0, tb = 0x0} Works with 4.6, haven't checked 4.7 yet.