section->relocation is NULL; malloc might have returned NULL when
given a zero size if there were no relocations.
* bout.c (b_out_canonicalize_reloc): Likewise.
* coffcode.h (coff_canonicalize_reloc): Likewise.
* ecoff.c (ecoff_canonicalize_reloc): Likewise.
* elfcode.h (elf_canonicalize_reloc): Likewise.
* mipsbsd.c (MY(canonicalize_reloc)): Likewise.
* i386lynx.c (NAME(lynx,canonicalize_reloc)): Likewise.
* nlmcode.h (nlm_canonicalize_reloc): Likewise.
* som.c (som_canonicalize_reloc): Likewise.
* hp300hpux.c (MY(slurp_reloc_table)): Likewise. Also, if malloc
returns NULL, don't report an error if we asked for zero bytes.
* i386lynx.c (NAME(lynx,slurp_reloc_table)): If malloc returns
NULL, don't report an error if we asked for zero bytes.
* nlmcode.h (nlm_slurp_reloc_fixups): Likewise.
* aoutx.h (aout_get_external_symbols): Renamed from
aout_link_get_symbols. Read strings even if symbols have been
read. Store string size in obj_aout_string_size.
(NAME(aout,slurp_symbol_table)): Call aout_get_external_symbols to
read the symbols. Allocate the cached symbols with malloc, not
bfd_alloc.
(NAME(aout,slurp_reloc_table)): Allocate the cached relocs with
malloc, not bfd_alloc.
(NAME(aout,bfd_free_cached_info)): New function; free cached
symbols and relocs.
* libaout.h (struct aoutdata): Add external_string_size field.
(obj_aout_external_string_size): New accessor macro.
(NAME(aout,close_and_cleanup)): Don't declare.
(NAME(aout,bfd_free_cached_info)): Declare.
(aout_32_close_and_cleanup): Don't define.
(aout_64_close_and_cleanup): Don't define.
* aout-target.h (MY_bfd_free_cached_info): If not already defined,
define as NAME(aout,free_cached_info).
(MY_close_and_cleanup): If not already defined, define as
MY_bfd_free_cached_info.
* aout-adobe.c (aout_32_close_and_cleanup): Define.
(aout_32_bfd_free_cached_info): Don't define.
* bout.c (aout_32_close_and_cleanup): Define.
(aout_32_bfd_free_cached_info): Don't define.
* hp300hpux.c (MY_bfd_free_cached_info): Define as bfd_true.
(MY_close_and_cleanup): Don't define.
* i386lynx.c (NAME(lynx,slurp_reloc_table)): Allocate the cached
relocs with malloc, not bfd_alloc.
* i386os9k.c (aout_32_close_and_cleanup): Define.
(aout_32_bfd_free_cached_info): Don't define.
read. (bfd_error_system_call or bfd_error_file_truncated).
* som.c: Do not blindly set bfd_error_system_call after a
failing bfd_read, bfd_write, or bfd_seek. In a few places
(like som_object_p) override the error status set by bfd_read.
* aix386-core.c, aout-encap,c archive.c, bout.c: Likewise.
* coff-rs6000.c, coffgen.c ecoff.c, elf.c: Likewise.
* elf32-hppa.c, elfcode.h, hp300hpux.c, i386lynx.c: Likewise.
* nlm32-alpha.c, nlm32-i386.c, nlm32-sparc.c: Likewise.
* som.c: Check return values from several bfd_{seek,read,write}
calls that we just assumed were not failing.
