Return void from linker callbacks

The ldmain.c implementation of these linker callback functions always
return true, so any code handling a false return is dead.  What's
more, some of the bfd backends abort if ever a false return is seen,
and there seems to be some confusion in gdb's compile-object-load.c.
The return value was never meant to be "oh yes, a multiple_definition
error occurred", but rather "out of memory or other catastrophic
failure".

This patch removes the status return on the callbacks that always
return true.  I kept the return status for "notice" because that one
does happen to need to return "out of memory".

include/
	* bfdlink.h (struct bfd_link_callbacks): Update comments.
	Return void from multiple_definition, multiple_common,
	add_to_set, constructor, warning, undefined_symbol,
	reloc_overflow, reloc_dangerous and unattached_reloc.
bfd/
	* aoutx.h: Adjust linker callback calls throughout file,
	removing dead code.
	* bout.c: Likewise.
	* coff-alpha.c: Likewise.
	* coff-arm.c: Likewise.
	* coff-h8300.c: Likewise.
	* coff-h8500.c: Likewise.
	* coff-i960.c: Likewise.
	* coff-mcore.c: Likewise.
	* coff-mips.c: Likewise.
	* coff-ppc.c: Likewise.
	* coff-rs6000.c: Likewise.
	* coff-sh.c: Likewise.
	* coff-tic80.c: Likewise.
	* coff-w65.c: Likewise.
	* coff-z80.c: Likewise.
	* coff-z8k.c: Likewise.
	* coff64-rs6000.c: Likewise.
	* cofflink.c: Likewise.
	* ecoff.c: Likewise.
	* elf-bfd.h: Likewise.
	* elf-m10200.c: Likewise.
	* elf-m10300.c: Likewise.
	* elf32-arc.c: Likewise.
	* elf32-arm.c: Likewise.
	* elf32-avr.c: Likewise.
	* elf32-bfin.c: Likewise.
	* elf32-cr16.c: Likewise.
	* elf32-cr16c.c: Likewise.
	* elf32-cris.c: Likewise.
	* elf32-crx.c: Likewise.
	* elf32-d10v.c: Likewise.
	* elf32-epiphany.c: Likewise.
	* elf32-fr30.c: Likewise.
	* elf32-frv.c: Likewise.
	* elf32-ft32.c: Likewise.
	* elf32-h8300.c: Likewise.
	* elf32-hppa.c: Likewise.
	* elf32-i370.c: Likewise.
	* elf32-i386.c: Likewise.
	* elf32-i860.c: Likewise.
	* elf32-ip2k.c: Likewise.
	* elf32-iq2000.c: Likewise.
	* elf32-lm32.c: Likewise.
	* elf32-m32c.c: Likewise.
	* elf32-m32r.c: Likewise.
	* elf32-m68hc1x.c: Likewise.
	* elf32-m68k.c: Likewise.
	* elf32-mep.c: Likewise.
	* elf32-metag.c: Likewise.
	* elf32-microblaze.c: Likewise.
	* elf32-moxie.c: Likewise.
	* elf32-msp430.c: Likewise.
	* elf32-mt.c: Likewise.
	* elf32-nds32.c: Likewise.
	* elf32-nios2.c: Likewise.
	* elf32-or1k.c: Likewise.
	* elf32-ppc.c: Likewise.
	* elf32-s390.c: Likewise.
	* elf32-score.c: Likewise.
	* elf32-score7.c: Likewise.
	* elf32-sh.c: Likewise.
	* elf32-sh64.c: Likewise.
	* elf32-spu.c: Likewise.
	* elf32-tic6x.c: Likewise.
	* elf32-tilepro.c: Likewise.
	* elf32-v850.c: Likewise.
	* elf32-vax.c: Likewise.
	* elf32-visium.c: Likewise.
	* elf32-xstormy16.c: Likewise.
	* elf32-xtensa.c: Likewise.
	* elf64-alpha.c: Likewise.
	* elf64-hppa.c: Likewise.
	* elf64-ia64-vms.c: Likewise.
	* elf64-mmix.c: Likewise.
	* elf64-ppc.c: Likewise.
	* elf64-s390.c: Likewise.
	* elf64-sh64.c: Likewise.
	* elf64-x86-64.c: Likewise.
	* elflink.c: Likewise.
	* elfnn-aarch64.c: Likewise.
	* elfnn-ia64.c: Likewise.
	* elfxx-mips.c: Likewise.
	* elfxx-sparc.c: Likewise.
	* elfxx-tilegx.c: Likewise.
	* linker.c: Likewise.
	* pdp11.c: Likewise.
	* pe-mips.c: Likewise.
	* reloc.c: Likewise.
	* reloc16.c: Likewise.
	* simple.c: Likewise.
	* vms-alpha.c: Likewise.
	* xcofflink.c: Likewise.
	* elf32-rl78.c (get_symbol_value, get_romstart, get_ramstart): Delete
	status param.  Adjust calls to these and linker callbacks throughout.
	* elf32-rx.c: (get_symbol_value, get_gp, get_romstart,
	get_ramstart): Delete status param.  Adjust calls to these and
	linker callbacks throughout.
ld/
	* ldmain.c (multiple_definition, multiple_common, add_to_set,
	constructor_callback, warning_callback, undefined_symbol,
	reloc_overflow, reloc_dangerous, unattached_reloc): Return void.
	* emultempl/elf32.em: Adjust callback calls.
gdb/
	* compile/compile-object-load.c (link_callbacks_multiple_definition,
	link_callbacks_warning, link_callbacks_undefined_symbol,
	link_callbacks_undefined_symbol, link_callbacks_reloc_overflow,
	link_callbacks_reloc_dangerous,
	link_callbacks_unattached_reloc): Return void.

1 files changed, 13 insertions, 23 deletions

diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index 6375ae4..20a1989 100644
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -11509,14 +11509,11 @@ elf32_arm_relocate_section (bfd *                  output_bfd,
 	      && r_symndx != STN_UNDEF
 	      && bfd_is_und_section (sec)
 	      && ELF_ST_BIND (sym->st_info) != STB_WEAK)
-	    {
-	      if (!info->callbacks->undefined_symbol
-		  (info, bfd_elf_string_from_elf_section
-		   (input_bfd, symtab_hdr->sh_link, sym->st_name),
-		   input_bfd, input_section,
-		   rel->r_offset, TRUE))
-		return FALSE;
-	    }
+	    (*info->callbacks->undefined_symbol)
+	      (info, bfd_elf_string_from_elf_section
+	       (input_bfd, symtab_hdr->sh_link, sym->st_name),
+	       input_bfd, input_section,
+	       rel->r_offset, TRUE);
 
 	  if (globals->use_rel)
 	    {
@@ -11736,20 +11733,15 @@ elf32_arm_relocate_section (bfd *                  output_bfd,
 	      /* If the overflowing reloc was to an undefined symbol,
 		 we have already printed one error message and there
 		 is no point complaining again.  */
-	      if ((! h ||
-		   h->root.type != bfd_link_hash_undefined)
-		  && (!((*info->callbacks->reloc_overflow)
-			(info, (h ? &h->root : NULL), name, howto->name,
-			 (bfd_vma) 0, input_bfd, input_section,
-			 rel->r_offset))))
-		  return FALSE;
+	      if (!h || h->root.type != bfd_link_hash_undefined)
+		(*info->callbacks->reloc_overflow)
+		  (info, (h ? &h->root : NULL), name, howto->name,
+		   (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
 	      break;
 
 	    case bfd_reloc_undefined:
-	      if (!((*info->callbacks->undefined_symbol)
-		    (info, name, input_bfd, input_section,
-		     rel->r_offset, TRUE)))
-		return FALSE;
+	      (*info->callbacks->undefined_symbol)
+		(info, name, input_bfd, input_section, rel->r_offset, TRUE);
 	      break;
 
 	    case bfd_reloc_outofrange:
@@ -11770,10 +11762,8 @@ elf32_arm_relocate_section (bfd *                  output_bfd,
 
 	    common_error:
 	      BFD_ASSERT (error_message != NULL);
-	      if (!((*info->callbacks->reloc_dangerous)
-		    (info, error_message, input_bfd, input_section,
-		     rel->r_offset)))
-		return FALSE;
+	      (*info->callbacks->reloc_dangerous)
+		(info, error_message, input_bfd, input_section, rel->r_offset);
 	      break;
 	    }
 	}