[1/3] bfd: fix -std=gnu23 compatibility wrt _Bool

  GCC trunk now defaults to -std=gnu23. We return false in a few places
which can't work when true/false are a proper type (_Bool). Return NULL
where appropriate instead of false. All callers handle this appropriately.

ChangeLog:
	PR ld/32372

	* bfd/elf32-ppc.c (ppc_elf_tls_setup): Return NULL.
        * bfd/elf32-xtensa.c (translate_reloc_bfd_fix): Ditto.
        (translate_reloc): Ditto.
        * bfd/elf64-ppc.c (update_local_sym_info): Ditto.
        * bfd/mach-o.c (bfd_mach_o_lookup_uuid_command): Ditto.
        * bfd/xsym.c (bfd_sym_read_name_table): Ditto.
---
 bfd/elf32-ppc.c    | 2 +-
 bfd/elf32-xtensa.c | 4 ++--
 bfd/elf64-ppc.c    | 2 +-
 bfd/mach-o.c       | 2 +-
 bfd/xsym.c         | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)
  

On Sat, Nov 16, 2024 at 2:33 PM Sam James <sam@gentoo.org> wrote:
>
> GCC trunk now defaults to -std=gnu23. We return false in a few places
> which can't work when true/false are a proper type (_Bool). Return NULL
> where appropriate instead of false. All callers handle this appropriately.
>
> ChangeLog:
>         PR ld/32372
>
>         * bfd/elf32-ppc.c (ppc_elf_tls_setup): Return NULL.

No bfd/ prefix.

>         * bfd/elf32-xtensa.c (translate_reloc_bfd_fix): Ditto.
>         (translate_reloc): Ditto.
>         * bfd/elf64-ppc.c (update_local_sym_info): Ditto.
>         * bfd/mach-o.c (bfd_mach_o_lookup_uuid_command): Ditto.
>         * bfd/xsym.c (bfd_sym_read_name_table): Ditto.
> ---
>  bfd/elf32-ppc.c    | 2 +-
>  bfd/elf32-xtensa.c | 4 ++--
>  bfd/elf64-ppc.c    | 2 +-
>  bfd/mach-o.c       | 2 +-
>  bfd/xsym.c         | 2 +-
>  5 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c
> index a5370a0624e..8c89ae1611f 100644
> --- a/bfd/elf32-ppc.c
> +++ b/bfd/elf32-ppc.c
> @@ -4352,7 +4352,7 @@ ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
>                       _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
>                                               opt->dynstr_index);
>                       if (!bfd_elf_link_record_dynamic_symbol (info, opt))
> -                       return false;
> +                       return NULL;
>                     }
>                   htab->tls_get_addr = opt;
>                 }
> diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
> index eb7fef9331e..58f79e55529 100644
> --- a/bfd/elf32-xtensa.c
> +++ b/bfd/elf32-xtensa.c
> @@ -10070,7 +10070,7 @@ translate_reloc_bfd_fix (reloc_bfd_fix *fix)
>       location.  Otherwise, the relocation should move within the
>       section.  */
>
> -  removed = false;
> +  removed = NULL;
>    if (is_operand_relocation (fix->src_type))
>      {
>        /* Check if the original relocation is against a literal being
> @@ -10141,7 +10141,7 @@ translate_reloc (const r_reloc *orig_rel, r_reloc *new_rel, asection *sec)
>
>    target_offset = orig_rel->target_offset;
>
> -  removed = false;
> +  removed = NULL;
>    if (is_operand_relocation (ELF32_R_TYPE (orig_rel->rela.r_info)))
>      {
>        /* Check if the original relocation is against a literal being
> diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
> index cd3aaacaeb3..9674fcdd6be 100644
> --- a/bfd/elf64-ppc.c
> +++ b/bfd/elf64-ppc.c
> @@ -4664,7 +4664,7 @@ update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
>           size_t amt = sizeof (*ent);
>           ent = bfd_alloc (abfd, amt);
>           if (ent == NULL)
> -           return false;
> +           return NULL;
>           ent->next = local_got_ents[r_symndx];
>           ent->addend = r_addend;
>           ent->owner = abfd;
> diff --git a/bfd/mach-o.c b/bfd/mach-o.c
> index 93224aaed00..974747caadd 100644
> --- a/bfd/mach-o.c
> +++ b/bfd/mach-o.c
> @@ -6037,7 +6037,7 @@ bfd_mach_o_lookup_uuid_command (bfd *abfd)
>    bfd_mach_o_load_command *uuid_cmd = NULL;
>    int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
>    if (ncmd != 1 || uuid_cmd == NULL)
> -    return false;
> +    return NULL;
>    return &uuid_cmd->command.uuid;
>  }
>
> diff --git a/bfd/xsym.c b/bfd/xsym.c
> index 070ba4a2318..fe14acc121f 100644
> --- a/bfd/xsym.c
> +++ b/bfd/xsym.c
> @@ -130,7 +130,7 @@ bfd_sym_read_name_table (bfd *abfd, bfd_sym_header_block *dshb)
>    size_t table_offset = dshb->dshb_nte.dti_first_page * dshb->dshb_page_size;
>
>    if (bfd_seek (abfd, table_offset, SEEK_SET) != 0)
> -    return false;
> +    return NULL;
>    return _bfd_alloc_and_read (abfd, table_size, table_size);
>  }
>
> --
> 2.47.0
>