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, 28 insertions, 41 deletions

diff --git a/bfd/coff-alpha.c b/bfd/coff-alpha.c
index 55fd35070b..16edc5f20c 100644
--- a/bfd/coff-alpha.c
+++ b/bfd/coff-alpha.c
@@ -1101,24 +1101,19 @@ alpha_ecoff_get_relocated_section_contents (bfd *abfd,
 	  switch (r)
 	    {
 	    case bfd_reloc_undefined:
-	      if (! ((*link_info->callbacks->undefined_symbol)
-		     (link_info, bfd_asymbol_name (*rel->sym_ptr_ptr),
-		      input_bfd, input_section, rel->address, TRUE)))
-		goto error_return;
+	      (*link_info->callbacks->undefined_symbol)
+		(link_info, bfd_asymbol_name (*rel->sym_ptr_ptr),
+		 input_bfd, input_section, rel->address, TRUE);
 	      break;
 	    case bfd_reloc_dangerous:
-	      if (! ((*link_info->callbacks->reloc_dangerous)
-		     (link_info, err, input_bfd, input_section,
-		      rel->address)))
-		goto error_return;
+	      (*link_info->callbacks->reloc_dangerous)
+		(link_info, err, input_bfd, input_section, rel->address);
 	      break;
 	    case bfd_reloc_overflow:
-	      if (! ((*link_info->callbacks->reloc_overflow)
-		     (link_info, NULL,
-		      bfd_asymbol_name (*rel->sym_ptr_ptr),
-		      rel->howto->name, rel->addend, input_bfd,
-		      input_section, rel->address)))
-		goto error_return;
+	      (*link_info->callbacks->reloc_overflow)
+		(link_info, NULL, bfd_asymbol_name (*rel->sym_ptr_ptr),
+		 rel->howto->name, rel->addend, input_bfd,
+		 input_section, rel->address);
 	      break;
 	    case bfd_reloc_outofrange:
 	    default:
@@ -1696,10 +1691,9 @@ alpha_relocate_section (bfd *output_bfd,
 			 do not have a meaningful number for the
 			 location within the section that is being
 			 relocated.  */
-		      if (! ((*info->callbacks->undefined_symbol)
-			     (info, h->root.root.string, input_bfd,
-			      input_section, (bfd_vma) 0, TRUE)))
-			return FALSE;
+		      (*info->callbacks->undefined_symbol)
+			(info, h->root.root.string, input_bfd,
+			 input_section, (bfd_vma) 0, TRUE);
 		      addend = 0;
 		    }
 		}
@@ -1712,10 +1706,9 @@ alpha_relocate_section (bfd *output_bfd,
 		      /* This symbol is not being written out.  Pass
 			 the address as 0, as with undefined_symbol,
 			 above.  */
-		      if (! ((*info->callbacks->unattached_reloc)
-			     (info, h->root.root.string, input_bfd,
-			      input_section, (bfd_vma) 0)))
-			return FALSE;
+		      (*info->callbacks->unattached_reloc)
+			(info, h->root.root.string,
+			 input_bfd, input_section, (bfd_vma) 0);
 		    }
 
 		  addend = alpha_convert_external_reloc (output_bfd, info,
@@ -1839,10 +1832,9 @@ alpha_relocate_section (bfd *output_bfd,
 		      && h->indx == -1)
 		    {
 		      /* This symbol is not being written out.  */
-		      if (! ((*info->callbacks->unattached_reloc)
-			     (info, h->root.root.string, input_bfd,
-			      input_section, r_vaddr - input_section->vma)))
-			return FALSE;
+		      (*info->callbacks->unattached_reloc)
+			(info, h->root.root.string, input_bfd,
+			 input_section, r_vaddr - input_section->vma);
 		    }
 
 		  relocation = alpha_convert_external_reloc (output_bfd,
@@ -1896,11 +1888,9 @@ alpha_relocate_section (bfd *output_bfd,
 		    }
 		  else
 		    {
-		      if (! ((*info->callbacks->undefined_symbol)
-			     (info, h->root.root.string, input_bfd,
-			      input_section,
-			      r_vaddr - input_section->vma, TRUE)))
-			return FALSE;
+		      (*info->callbacks->undefined_symbol)
+			(info, h->root.root.string, input_bfd, input_section,
+			 r_vaddr - input_section->vma, TRUE);
 		      relocation = 0;
 		    }
 		}
@@ -1942,12 +1932,10 @@ alpha_relocate_section (bfd *output_bfd,
 		    else
 		      name = bfd_section_name (input_bfd,
 					       symndx_to_section[r_symndx]);
-		    if (! ((*info->callbacks->reloc_overflow)
-			   (info, NULL, name,
-			    alpha_howto_table[r_type].name,
-			    (bfd_vma) 0, input_bfd, input_section,
-			    r_vaddr - input_section->vma)))
-		      return FALSE;
+		    (*info->callbacks->reloc_overflow)
+		      (info, NULL, name, alpha_howto_table[r_type].name,
+		       (bfd_vma) 0, input_bfd, input_section,
+		       r_vaddr - input_section->vma);
 		  }
 		  break;
 		}
@@ -1967,10 +1955,9 @@ alpha_relocate_section (bfd *output_bfd,
 
       if (gp_usedp && gp_undefined)
 	{
-	  if (! ((*info->callbacks->reloc_dangerous)
-		 (info, _("GP relative relocation used when GP not defined"),
-		  input_bfd, input_section, r_vaddr - input_section->vma)))
-	    return FALSE;
+	  (*info->callbacks->reloc_dangerous)
+	    (info, _("GP relative relocation used when GP not defined"),
+	     input_bfd, input_section, r_vaddr - input_section->vma);
 	  /* Only give the error once per link.  */
 	  gp = 4;
 	  _bfd_set_gp_value (output_bfd, gp);