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, 14 insertions, 30 deletions

diff --git a/bfd/elflink.c b/bfd/elflink.c
index b4efd5a..93e7dd2 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -1481,10 +1481,8 @@ _bfd_elf_merge_symbol (bfd *abfd,
 	 the old symbol override the new one as normally happens with
 	 symbols defined in dynamic objects.  */
 
-      if (! ((*info->callbacks->multiple_common)
-	     (info, &h->root, abfd, bfd_link_hash_common, sym->st_size)))
-	return FALSE;
-
+      (*info->callbacks->multiple_common) (info, &h->root, abfd,
+					   bfd_link_hash_common, sym->st_size);
       if (sym->st_size > h->size)
 	h->size = sym->st_size;
 
@@ -1642,9 +1640,8 @@ _bfd_elf_merge_symbol (bfd *abfd,
       /* It would be best if we could set the hash table entry to a
 	 common symbol, but we don't know what to use for the section
 	 or the alignment.  */
-      if (! ((*info->callbacks->multiple_common)
-	     (info, &h->root, abfd, bfd_link_hash_common, sym->st_size)))
-	return FALSE;
+      (*info->callbacks->multiple_common) (info, &h->root, abfd,
+					   bfd_link_hash_common, sym->st_size);
 
       /* If the presumed common symbol in the dynamic object is
 	 larger, pretend that the new symbol has its size.  */
@@ -9235,19 +9232,11 @@ elf_link_output_extsym (struct bfd_hash_entry *bh, void *data)
 	  && (!h->ref_regular || flinfo->info->gc_sections)
 	  && !elf_link_check_versioned_symbol (flinfo->info, bed, h)
 	  && flinfo->info->unresolved_syms_in_shared_libs != RM_IGNORE)
-	{
-	  if (!(flinfo->info->callbacks->undefined_symbol
-		(flinfo->info, h->root.root.string,
-		 h->ref_regular ? NULL : h->root.u.undef.abfd,
-		 NULL, 0,
-		 (flinfo->info->unresolved_syms_in_shared_libs
-		  == RM_GENERATE_ERROR))))
-	    {
-	      bfd_set_error (bfd_error_bad_value);
-	      eoinfo->failed = TRUE;
-	      return FALSE;
-	    }
-	}
+	(*flinfo->info->callbacks->undefined_symbol)
+	  (flinfo->info, h->root.root.string,
+	   h->ref_regular ? NULL : h->root.u.undef.abfd,
+	   NULL, 0,
+	   flinfo->info->unresolved_syms_in_shared_libs == RM_GENERATE_ERROR);
 
       /* Strip a global symbol defined in a discarded section.  */
       if (h->indx == -3)
@@ -10761,9 +10750,8 @@ elf_reloc_link_order (bfd *output_bfd,
 	}
       else
 	{
-	  if (! ((*info->callbacks->unattached_reloc)
-		 (info, link_order->u.reloc.p->u.name, NULL, NULL, 0)))
-	    return FALSE;
+	  (*info->callbacks->unattached_reloc)
+	    (info, link_order->u.reloc.p->u.name, NULL, NULL, 0);
 	  indx = 0;
 	}
     }
@@ -10798,13 +10786,9 @@ elf_reloc_link_order (bfd *output_bfd,
 					 link_order->u.reloc.p->u.section);
 	  else
 	    sym_name = link_order->u.reloc.p->u.name;
-	  if (! ((*info->callbacks->reloc_overflow)
-		 (info, NULL, sym_name, howto->name, addend, NULL,
-		  NULL, (bfd_vma) 0)))
-	    {
-	      free (buf);
-	      return FALSE;
-	    }
+	  (*info->callbacks->reloc_overflow) (info, NULL, sym_name,
+					      howto->name, addend, NULL, NULL,
+					      (bfd_vma) 0);
 	  break;
 	}