bfd/

[deliverable/binutils-gdb.git] / bfd / ChangeLog

2004-05-02  H.J. Lu  <hongjiu.lu@intel.com>

	* section.c (bfd_get_section_by_name_if): New.
	* bfd-in2.h: Regenerated.

2004-05-02  Alan Modra  <amodra@bigpond.net.au>

	* som.c (som_bfd_is_group_section): Define.

2004-05-01  Alan Modra  <amodra@bigpond.net.au>

	* section.c (bfd_make_section_anyway): Copy the whole
	bfd_hash_entry, not just "next" from existing entry.

2004-04-30  H.J. Lu  <hongjiu.lu@intel.com>

	* elf.c (bfd_section_from_shdr): Maintain the section order in
	a section group.
	(special_sections): Add ".note.GNU-stack".
	(elf_fake_sections): Handle section group for relocatable
	link..

2004-04-30  H.J. Lu  <hongjiu.lu@intel.com>

	* section.c (bfd_sections_find_if): New.
	* bfd-in2.h: Regenerated.

2004-04-30  Alan Modra  <amodra@bigpond.net.au>

	* section.c (bfd_make_section_anyway): Add all sections to hash tab.

	* elf-bfd.h (bfd_elf_is_group_section): Declare.
	* elf.c (bfd_elf_is_group_section): New function.
	* elfxx-target.h (bfd_elfNN_bfd_is_group_section
	* section.c (bfd_generic_is_group_section): New function.
	* targets.c (struct bfd_target): Add _bfd_is_group_section field.
	(BFD_JUMP_TABLE_LINK): Adjust.
	* aout-adobe.c (aout_32_bfd_is_group_section): Define.
	* aout-target.h (MY_bfd_is_group_section): Define.
	* aout-tic30.c (MY_bfd_is_group_section): Define.
	* bfd.c (bfd_is_group_section): Define.
	* binary.c (binary_bfd_is_group_section): Define.
	* bout.c (b_out_bfd_is_group_section): Define.
	* coff-alpha.c (_bfd_ecoff_bfd_is_group_section): Define.
	* coff-mips.c (_bfd_ecoff_bfd_is_group_section): Define.
	* coff-rs6000.c (rs6000coff_vec, pmac_xcoff_vec): Adjust.
	* coff64-rs6000.c (rs6000coff64_vec, aix5coff64_vec): Adjust.
	* coffcode.h (coff_bfd_is_group_section): Define.
	* i386msdos.c (msdos_bfd_is_group_section): Define.
	* i386os9k.c (os9k_bfd_is_group_section): Define.
	* ieee.c (ieee_bfd_is_group_section): Define.
	* ihex.c (ihex_bfd_is_group_section): Define.
	* libbfd-in.h (_bfd_nolink_bfd_is_group_section): Define.
	* mach-o.c (bfd_mach_o_bfd_is_group_section): Define.
	* mmo.c (mmo_bfd_is_group_section): Define.
	* nlm-target.h (nlm_bfd_is_group_section): Define.
	* oasys.c (oasys_bfd_is_group_section): Define.
	* pef.c (bfd_pef_bfd_is_group_section): Define.
	* ppcboot.c (ppcboot_bfd_is_group_section): Define.
	* srec.c (srec_bfd_is_group_section): Define.
	* tekhex.c (tekhex_bfd_is_group_section): Define.
	* versados.c (versados_bfd_is_group_section): Define.
	* vms.c (vms_bfd_is_group_section): Define.
	* xsym.c (bfd_sym_bfd_is_group_section): Define.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.

2004-04-30  Alan Modra  <amodra@bigpond.net.au>

	* elflink.c (elf_gc_mark): Follow indirect and warning syms.

2004-04-30  Hans-Peter Nilsson  <hp@axis.com>

	* configure.in: Update version to 2.15.91.
	* configure: Regenerate.

2004-04-29  Brian Ford  <ford@vss.fsi.com>

	* bfd.c (bfd_get_sign_extend_vma): Add pe[i]-i386 case to DJGPP hack.
	* coffcode.h (DOT_DEBUG, GNU_LINKONCE_WI): Define.
	[!COFF_WITH_PE] (sec_to_styp_flags, styp_to_sec_flags): Use them.
	(coff_compute_section_file_positions) [RS6000COFF_C]: Likewise.
	[COFF_WITH_PE] (sec_to_styp_flags): Handle DWARF 2/3 .debug* and
	.gnu.linkonce.wi. sections.
	* pe-i386.c (COFF_SUPPORT_GNU_LINKONCE): Define.
	(COFF_SECTION_ALIGNMENT_ENTRIES): Add entries for .debug and
	.gnu.linkonce.wi..
	* pei-i386.c (COFF_SUPPORT_GNU_LINKONCE): Likewise.
	(COFF_SECTION_ALIGNMENT_ENTRIES): Likewise.

2004-04-28  Chris Demetriou  <cgd@broadcom.com>

	* reloc.c: Remove BFD_RELOC_PCREL_HI16_S and BFD_RELOC_PCREL_LO16.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Likewise.

2004-04-28  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	* som.c (struct som_misc_symbol_info): Add is_comdat, is_common and
	dup_common fields.
	(setup_sections): Use som_subspace_dictionary_record struct instead
	subspace_dictionary_record.  Set SEC_LINK_ONCE if subspace is
	is_comdat, is_common or dup_common.
	(som_prep_headers): Use som_subspace_dictionary_record struct.  Set
	is_comdat, is_common and dup_common in section subspace_dict from
	copy_data.
	(som_begin_writing): Use som_subspace_dictionary_record struct.
	(som_finish_writing): Likewise.
	(som_bfd_derive_misc_symbol_info): Add support to set is_comdat,
	is_common and dup_common flags in info for symbol.  Add comment
	regarding linker support for these fields.  Slightly reorganize
	function.
	(som_build_and_write_symbol_table): Set is_comdat, is_common and
	dup_common fields in symbol table from symbol info.
	(bfd_som_set_subsection_attributes): Add comdat, common and dup_common
	arguments.  Set corresponding fields in copy_data.  Change all callers.
	(som_bfd_ar_write_symbol_stuff): Set dup_common flag in library
	symbol table.
	(som_vec): Add SEC_LINK_ONCE to applicable section flags.
	* som.h (som_subspace_dictionary_record): Define.
	(som_copyable_section_data_struct): Add is_comdat, is_common and
	dup_common fields.
	(som_section_data_struct): Use som_subspace_dictionary_record struct
	instead of subspace_dictionary_record.
	(bfd_boolean bfd_som_set_subsection_attributes): Adjust prototype.

2004-04-27  Bob Wilson  <bob.wilson@acm.org>

	* elf32-xtensa.c (xtensa_read_table_entries): Use section _cooked_size
	if set.  Check reloc_done flag before applying relocations.  Use
	output addresses, both when applying relocations and when comparing
	against the specified section.
	(elf_xtensa_relocate_section): Use output address to check if dynamic
	reloc is in a literal pool.  Set section's reloc_done flag.

2004-04-27  H.J. Lu  <hongjiu.lu@intel.com>

	* elf32-sh64.c (elf_backend_section_flags): New. Defined.
	(sh64_elf_set_mach_from_flags): Remove the kludge for .cranges
	section.
	(sh64_elf_section_flags): New. Set SEC_DEBUGGING for .cranges
	section.

2004-04-27  Alan Modra  <amodra@bigpond.net.au>

	* elf64-alpha.c (elf64_alpha_read_ecoff_info): Don't assign
	structure field removed in 2004-04-24 patch.
	* elf64-sparc.c (sparc64_elf_plt_sym_val): Warning fix.

	* elf-bfd.h (struct elf_backend_data <elf_backend_section_flags>):
	Constify hdr arg.
	* elf32-arm.h (elf32_arm_section_flags): Likewise.
	* elf64-alpha.c (elf64_alpha_section_flags): Likewise.
	* elfxx-ia64.c (elfNN_ia64_section_flags): Likewise.
	* elf.c (_bfd_elf_make_section_from_shdr): Set the bfd_section
	field before calling elf_backend_section_flags.

2004-04-24  Chris Demetriou  <cgd@broadcom.com>

	* elf32-mips.c (elf_mips_gnu_rel_hi16, elf_mips_gnu_rel_lo16)
	(elf_mips_gnu_pcrel64, elf_mips_gnu_pcrel32): Remove.
	(bfd_elf32_bfd_reloc_type_lookup): Remove cases for
	BFD_RELOC_PCREL_HI16_S, BFD_RELOC_PCREL_LO16, BFD_RELOC_64_PCREL,
	and BFD_RELOC_32_PCREL.
	(mips_elf32_rtype_to_howto): Remove cases for R_MIPS_GNU_REL_HI16,
	R_MIPS_GNU_REL_LO16, R_MIPS_PC64, R_MIPS_PC32.
	* elfxx-mips.c (mips_elf_calculate_relocation): Likewise.
	(_bfd_mips_elf_lo16_reloc): Remove handling for R_MIPS_GNU_REL_HI16.
	(mips_elf_next_relocation): Move comment about matching HI/LO
	relocations to...
	(_bfd_mips_elf_relocate_section): Here.  Remove handling for
	R_MIPS_GNU_REL_HI16.

2004-04-23  Chris Demetriou  <cgd@broadcom.com>

	* coff-mips.c (mips_relhi_reloc, mips_rello_reloc)
	(mips_switch_reloc, mips_read_relocs, mips_relax_section)
	(mips_relax_pcrel16, PCREL16_EXPANSION_ADJUSTMENT): Remove.
	(mips_relocate_hi): Remove now-unused 'adjust' and 'pcrel' arguments,
	and update comments to reflect current usage.
	(mips_howto_table): Remove entries for MIPS_R_RELHI, MIPS_R_RELLO,
	and MIPS_R_SWITCH, as well as several empty entries.  Update comment
	for MIPS_R_PCREL16.
	(mips_ecoff_swap_reloc_in, mips_ecoff_swap_reloc_out)
	(mips_adjust_reloc_out, mips_bfd_reloc_type_lookup): Remove support
	for MIPS_R_SWITCH, MIPS_R_RELLO, and MIPS_R_RELHI relocations.
	(mips_adjust_reloc_in): Likewise, adjust maximum accepted relocation
	type number to be MIPS_R_PCREL16.
	(mips_relocate_section): Remove support for link-time relaxation
	of branches used by embedded-PIC.  Remove support for MIPS_R_SWITCH,
	MIPS_R_RELLO, and MIPS_R_RELHI relocations.
	(_bfd_ecoff_bfd_relax_section): Redefine to bfd_generic_relax_section.
	* ecoff.c (ecoff_indirect_link_order): Remove support for link-time
	relaxation of branches used by embedded-PIC.
	* ecofflink.c (bfd_ecoff_debug_accumulate): Likewise.
	* libecoff.h (struct ecoff_section_tdata): Remove embedded-PIC
	related members, update comment.
	* pe-mips.c: Remove disabled (commented-out and #if 0'd)
	code related to embedded-PIC.
	* elfxx-mips.c (_bfd_mips_elf_read_ecoff_info): Remove
	initialization of now-removed 'adjust' member of
	'struct ecoff_debug_info'.

2004-04-23  Chris Demetriou  <cgd@broadcom.com>

	* elfxx-mips.c (mips_elf_get_global_gotsym_index): Remove.

2004-04-21  Philip Blundell  <pb@nexus.co.uk>

	* elf32-arm.h (elf32_arm_check_relocs): Don't output REL32
	relocs for locally defined symbols during -shared final link.
	(elf32_arm_final_link_relocate): Likewise.

2004-04-22  Jakub Jelinek  <jakub@redhat.com>

	* elf64-x86-64.c (elf64_x86_64_copy_indirect_symbol): Copy also
	ELF_LINK_POINTER_EQUALITY_NEEDED.
	(elf64_x86_64_check_relocs): Set ELF_LINK_POINTER_EQUALITY_NEEDED
	if r_type is not R_X86_64_PC32.
	(elf64_x86_64_finish_dynamic_symbol): If
	ELF_LINK_POINTER_EQUALITY_NEEDED is not set, clear st_value of
	SHN_UNDEF symbols.

2004-04-22  Kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* elf32-sh.c (sh_elf_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.

2004-04-22  Andrew Cagney  <cagney@redhat.com>

	* opncls.c (bfd_alloc): Fix type of "wanted" in doco.

2004-04-22  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	* hpux-core.c (hpux_core_core_file_p): Add cast in call to 
	make_bfd_asection.
	* som.c (som_set_section_contents): Constantify second argument.
	(hppa_som_gen_reloc_type): Abort for unsupported selectors.
	(som_object_setup): Rework to avoid warning.
	(setup_sections, som_write_fixups, bfd_section_from_som_symbol):
	Likewise.

2004-04-22  Andrew Cagney  <cagney@redhat.com>

	* cache.c (bfd_cache_close): Check for a previously closed file.

2004-04-22  Jakub Jelinek  <jakub@redhat.com>

	* bfd.c (bfd_get_synthetic_symtab): Define.
	* targets.c (BFD_JUMP_TABLE_DYNAMIC): Add
	NAME##_get_synthetic_symtab.
	(struct bfd_target): Add _bfd_get_synthetic_symtab.
	* libbfd-in.h (_bfd_nodynamic_get_synthetic_symtab): Define.
	* elf-bfd.h (struct elf_backend_data): Add plt_sym_val and
	relplt_name fields.
	(_bfd_elf_get_synthetic_symtab): New prototype.
	* elfcode.h (elf_get_synthetic_symtab): Define.
	* elf.c (_bfd_elf_get_synthetic_symtab): New function.
	* elfxx-target.h (bfd_elfNN_get_synthetic_symtab): Define.
	(elf_backend_plt_sym_val, elf_backend_relplt_name): Define.
	(elfNN_bed): Add elf_backend_plt_sym_val and elf_backend_relplt_name.
	* bfd-in2.h: Rebuilt.
	* libbfd.h: Rebuilt.
	* elf32-i386.c (elf_i386_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf64-x86-64.c (elf64_x86_64_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf32-s390.c (elf_s390_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf64-s390.c (elf_s390_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf32-sparc (elf32_sparc_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf64-sparc.c (sparc64_elf_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* elf32-ppc.c (ppc_elf_plt_sym_val): New function.
	(elf_backend_plt_sym_val): Define.
	* aout-target.h (MY_get_synthetic_symtab): Define.
	* aout-tic30.c (MY_get_synthetic_symtab): Define.
	* coff-rs6000.c (rs6000coff_vec): Add
	_bfd_nodynamic_get_synthetic_symtab.
	(pmac_xcoff_vec): Likewise.
	* coff64-rs6000.c (rs6000coff64_vec): Add
	_bfd_nodynamic_get_synthetic_symtab.
	(aix5coff64_vec): Likewise.
	* sunos.c (MY_get_synthetic_symtab): Define.
	* vms.c (vms_get_synthetic_symtab): Define.

2004-04-22  Nick Clifton  <nickc@redhat.com>

	* bfd.c (bfd_archive_filename): Return NULL on NULL input.

2004-04-22  Peter Barada <peter@the-baradas.com>

	* archures.c: Add bfd_mach_mcfv4e to bfd_architecture.
	* bfd2-in.h: Regenerate.
	* cpu-m68k.c: Add 'm68k:mcfv4e' to arch_info_struct[].

2004-04-21  Chris Demetriou  <cgd@broadcom.com>

	* coff-mips.c (bfd_mips_ecoff_create_embedded_relocs): Remove.
	* elf32-mips.c (bfd_mips_elf32_create_embedded_relocs): Remove.
	* bfd-in.h (bfd_mips_ecoff_create_embedded_relocs)
	(bfd_mips_elf32_create_embedded_relocs): Remove prototypes
	* bfd-in2.h: Regenerate.

2004-04-21  Bob Wilson  <bob.wilson@acm.org>

	* elf32-xtensa.c (is_same_value): Add final_static_link argument and
	require relocations against a weak symbol to reference the same
	symbol hash entry if not a final, static link.
	(get_cached_value, add_value_map): Add final_static_link argument.
	(remove_literals): Pass final_static_link argument as needed.

2004-04-21  Andrew Cagney  <cagney@redhat.com>

	* opncls.c (_bfd_new_bfd_contained_in): Copy "iovec".
	(struct opncls, opncls_btell, opncls_bseek, opncls_bread)
	(opncls_bwrite, opncls_bclose, opncls_bflush)
	(opncls_bstat, opncls_iovec, bfd_openr_iovec): Implement a
	bfd iovec that uses function callbacks.
	(bfd_close): Use the iovec's bclose.
	* cache.c (cache_btell, cache_bseek, cache_bread, cache_bwrite)
	(cache_bclose, cache_bflush, cache_bstat)
	(cache_iovec): New functions and global variable, implement a
	cache "iovec", where applicable set bfd_error.
	(bfd_cache_init, bfd_cache_close): Set/test the bfd's iovec.
	* bfdio.c (struct bfd_iovec): Define.
	(real_read): Delete function.
	(bfd_bread, bfd_bread, bfd_bwrite, bfd_tell, bfd_flush, bfd_stat)
	(bfd_seek, bfd_get_mtime, bfd_get_size): Use the bfd's "iovec",
	assume that bread and bwrite set bfd_error.
	* bfd.c (struct bfd): Add "iovec", update comments.
	* bfd-in2.h, libbfd.h: Re-generate.

2004-04-21  Andrew Cagney  <cagney@redhat.com>

	* libaout.h (enum machine_type): Add M_POWERPC_NETBSD.

2004-04-21  Eric Botcazou  <ebotcazou@act-europe.fr>

	* elflink.c (elf_gc_mark_dynamic_ref_symbol): New function.
	(bfd_elf_gc_sections): Fail if a shared object is being created.
	Do not fail if dynamic sections have been created.  Instead call
	elf_gc_mark_dynamic_ref_symbol to mark sections that contain
	dynamically referenced symbols.  Do not mark the whole graph
	rooted at .eh_frame, only the section proper.

2004-04-20  DJ Delorie  <dj@redhat.com>

	* reloc.c: Add BFD_RELOC_32_SECREL.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Likewise.
	* coff-i386.c (howto_table) [COFF_WITH_PE]: Add R_SECREL32.
	(coff_i386_rtype_to_howto) [COFF_WITH_PE]: Handle it.
	(coff_i386_reloc_type_lookup) [COFF_WITH_PE]: Likewise.

2004-04-19  Jakub Jelinek  <jakub@redhat.com>

	* elf32-sparc.c (elf32_sparc_relocate_section): Handle
	relocs against hidden/protected undefweak symbols properly.
	* elf64-sparc.c (sparc64_elf_relocate_section): Likewise.

2004-04-18  Mark Kettenis  <kettenis@gnu.org>

	* libaout.h (enum machine_type): Add M_POWERPC_NETBSD.
	* netbsd-core.c (netbsd_core_file_p): Set architecture for PowerPC
	core files.

2004-04-17  Brian Ford  <ford@vss.fsi.com>

	* peXXigen.c (_bfd_XXi_swap_aouthdr_out): Use the first non-zero
	filepos for the SizeOfHeaders field.
	(_bfd_XXi_swap_scnhdr_out): Correct section flags lossage on reloc
	overflow.
	(_bfd_XXi_swap_sym_in): Remove redundant section flags assignment.

2004-04-16  Alan Modra  <amodra@bigpond.net.au>

	* simple.c (bfd_simple_get_relocated_section_contents): Don't
	change reloc_done.  Set and restore _cooked_size.
	(RETURN): Delete.

2004-04-15  Mark Kettenis  <kettenis@gnu.org>

	* netbsd-core.c (netbsd_core_file_p): Set architecture for VAX
	core files.

2004-04-15  Nick Clifton  <nickc@redhat.com>

	* bfd.c (bfd_archive_filename): Catch NULL bfd pointers.

2004-04-15  Alan Modra  <amodra@bigpond.net.au>

	* elf64-sparc.c (sparc64_elf_check_relocs): Fix thinko last change.

2004-04-15  H.J. Lu  <hongjiu.lu@intel.com>

	* elflink.c (_bfd_elf_merge_symbol): Treat weak as strong only
	when it is a definition.

2004-04-14  Alan Modra  <amodra@bigpond.net.au>

	* elf32-sparc.c (elf32_sparc_relocate_section): Don't abort
	when statically linking PIC code.
	* elf64-sparc.c (sparc64_elf_relocate_section): Likewise.

2004-04-11  Thiemo Seufer  <seufer@csv.ica.uni-stuttgart.de>

	* config.bfd: Remove mips*-*-mach3* and mips*-dec-mach3* targets.
	* configure.in: Remove mips-dec-bsd*, mips-dec-mach3*, mips-*-mach3*
	targets amd aout_mips_big_vec, aout_mips_little_vec target vectors.
	* configure: Regenerate.

2004-04-08  Richard Sandiford  <rsandifo@redhat.com>

	* elflink.c: Include libiberty.h.
	* Makefile.am (elflink.lo): Depend on libiberty.h.
	* Makefile.in: Regenerate.

2004-04-06  Daniel Jacobowitz  <drow@mvista.com>

	* elfxx-mips.c (MIPS_ELF_STUB_SECTION_NAME): Always use
	".MIPS.stubs".

2004-04-05  H.J. Lu  <hongjiu.lu@intel.com>

	* elfxx-ia64.c (elfNN_ia64_size_dynamic_sections): Always
	reserve the memory for dynamic linker

2004-04-05  Mark Kettenis  <kettenis@gnu.org>

	* netbsd-core.c (CORE_WCOOKIE_OFFSET): New define.
	(netbsd_core_file_p): Create a .wcookie section for OpenBSD/sparc.

2004-04-02  H.J. Lu  <hongjiu.lu@intel.com>

	* elf32-cr16c.c (elf32_cr16c_relocate_section): Use
	RELOC_FOR_GLOBAL_SYMBOL.
	(elf32_cr16c_add_symbol_hook): Remove const from Elf_Internal_Sym.

2004-04-02  H.J. Lu  <hongjiu.lu@intel.com>

	* elf32-arm.h (elf32_arm_final_link_relocate): Handle
	R_ARM_ALU* only if OLD_ARM_ABI is not defined.

2004-04-01  Paul Brook  <paul@codesourcery.com>

	* bfd-in.h (bfd_elf32_arm_process_before_allocation): Update.
	* elf32-arm.h (struct elf32_elf_section_map): New.
	(struct _arm_elf_section_data): New.
	(elf32_arm_section_data): Define.
	(struct elf32_arm_link_hash_table): Add byteswap_code.
	(elf32_arm_link_hash_table_create): Initialize byteswap_code.
	(bfd_elf32_arm_process_before_allocation): Add byteswap_code.
	(elf32_arm_post_process_headers): Set EF_ARM_BE8.
	(elf32_arm_output_symbol_hook, elf32_arm_new_section_hook,
	elf32_arm_compare_mapping, elf32_arm_write_section): New functions.
	(bfd_elf32_new_section_hook, elf_backend_write_section,
	elf_backend_link_output_symbol_hook): Define.

2004-04-01  Andy Chittenden  <achittenden@bluearc.com>

	* stabs.c (struct stab_link_includes_totals): Add field 'symb'
	that keeps the characters in a B_INCL..B_EINCL range.
	(_bfd_link_section_stabs): When computing the sum of the
	characters in a B_INCL..B_EINCL range also keep a copy of those
	characters.  Use this information to distinguish between
	include sections that have the same sum and the same length
	but which are nevertheless unique.

2004-03-31  Paul Brook  <paul@codesourcery.com>

	* elf32-arm.h (elf32_arm_final_link_relocate): Add R_ARM_ALU*.
	* elfarm-nabi.c (elf32_arm_howto_table): Ditto.

2004-03-31  Andy Chittenden <achittenden@bluearc.com>

	* stabs.c (struct stab_link_includes_totals): Rename field 'total'
	to 'sum_chars' and add field 'num_chars'.
	(_bfd_link_section_stabs): When computing the sum of the
	characters in a B_INCL..B_EINCL range also keep a count of the
	number of characters.  Use this information to help distinguish
	between include sections when have the same sum but which
	nevertheless are still unique.