PR ld/12762

bfd/
	* elflink.c (_bfd_elf_section_already_linked): Return matched
	status.  Remove COFF comdat section handling.
	* linker.c (_bfd_generic_section_already_linked): Return matched
	status.  Don't set SEC_GROUP in l_flags for plugin entries.
	(bfd_section_already_linked): Update prototype.
	* targets.c (_section_already_linked): Likewise.
	* elf-bfd.h (_bfd_elf_section_already_linked): Likewise.
	* libbfd-in.h (_bfd_generic_section_already_linked): Likewise.
	(_bfd_nolink_section_already_linked): Update.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.
ld/
	* plugin.c (add_symbols): Exclude comdat_key symbols from symbol
	table if already seen.

8 files changed, 54 insertions, 37 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index f6ccd54..82defd9 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,20 @@
 2011-08-05  Alan Modra  <amodra@gmail.com>
 
+	PR ld/12762
+	* elflink.c (_bfd_elf_section_already_linked): Return matched
+	status.  Remove COFF comdat section handling.
+	* linker.c (_bfd_generic_section_already_linked): Return matched
+	status.  Don't set SEC_GROUP in l_flags for plugin entries.
+	(bfd_section_already_linked): Update prototype.
+	* targets.c (_section_already_linked): Likewise.
+	* elf-bfd.h (_bfd_elf_section_already_linked): Likewise.
+	* libbfd-in.h (_bfd_generic_section_already_linked): Likewise.
+	(_bfd_nolink_section_already_linked): Update.
+	* libbfd.h: Regenerate.
+	* bfd-in2.h: Regenerate.
+
+2011-08-05  Alan Modra  <amodra@gmail.com>
+
 	* elf32-ppc.c: Include dwarf2.h.
 	(struct ppc_elf_link_hash_table): Add glink_eh_frame.
 	(ppc_elf_create_glink): Create .eh_frame section.
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index ac8145d..af13ca4 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -6107,8 +6107,8 @@ typedef struct bfd_target
 
   /* Check if SEC has been already linked during a reloceatable or
      final link.  */
-  void (*_section_already_linked) (bfd *, struct already_linked *,
-                                   struct bfd_link_info *);
+  bfd_boolean (*_section_already_linked) (bfd *, struct already_linked *,
+                                          struct bfd_link_info *);
 
   /* Define a common symbol.  */
   bfd_boolean (*_bfd_define_common_symbol) (bfd *, struct bfd_link_info *,
@@ -6177,7 +6177,7 @@ bfd_boolean bfd_link_split_section (bfd *abfd, asection *sec);
 #define bfd_link_split_section(abfd, sec) \
        BFD_SEND (abfd, _bfd_link_split_section, (abfd, sec))
 
-void bfd_section_already_linked (bfd *abfd,
+bfd_boolean bfd_section_already_linked (bfd *abfd,
     struct already_linked *data,
     struct bfd_link_info *info);
 
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index e6ea580..2c80f67 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1802,7 +1802,7 @@ extern bfd_boolean _bfd_elf_match_sections_by_type
 extern bfd_boolean bfd_elf_is_group_section
   (bfd *, const struct bfd_section *);
 struct already_linked;
-extern void _bfd_elf_section_already_linked
+extern bfd_boolean _bfd_elf_section_already_linked
   (bfd *, struct already_linked *, struct bfd_link_info *);
 extern void bfd_elf_set_group_contents
   (bfd *, asection *, void *);
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 2e592f5..53765b6 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -12515,7 +12515,7 @@ section_signature (asection *sec)
   return sec->name;
 }
 
-void
+bfd_boolean
 _bfd_elf_section_already_linked (bfd *abfd,
 				 struct already_linked *linked,
 				 struct bfd_link_info *info)
@@ -12525,6 +12525,7 @@ _bfd_elf_section_already_linked (bfd *abfd,
   struct bfd_section_already_linked *l;
   struct bfd_section_already_linked_hash_entry *already_linked_list;
   asection *sec, *l_sec;
+  bfd_boolean matched;
 
   p = name = linked->comdat_key;
   if (name)
@@ -12536,20 +12537,20 @@ _bfd_elf_section_already_linked (bfd *abfd,
     {
       sec = linked->u.sec;
       if (sec->output_section == bfd_abs_section_ptr)
-	return;
+	return FALSE;
 
       flags = sec->flags;
 
       /* Return if it isn't a linkonce section.  A comdat group section
 	 also has SEC_LINK_ONCE set.  */
       if ((flags & SEC_LINK_ONCE) == 0)
-	return;
+	return FALSE;
 
       /* Don't put group member sections on our list of already linked
 	 sections.  They are handled as a group via their group section.
 	 */
       if (elf_sec_group (sec) != NULL)
-	return;
+	return FALSE;
 
       /* FIXME: When doing a relocatable link, we may have trouble
 	 copying relocations in other sections that refer to local symbols
@@ -12582,7 +12583,6 @@ _bfd_elf_section_already_linked (bfd *abfd,
 
   for (l = already_linked_list->entry; l != NULL; l = l->next)
     {
-      bfd_boolean l_coff_comdat_sec;
       flagword l_flags;
       bfd *l_owner;
       const char *l_name = l->linked.comdat_key;
@@ -12593,23 +12593,19 @@ _bfd_elf_section_already_linked (bfd *abfd,
 	  l_flags = (SEC_GROUP
 		     | SEC_LINK_ONCE
 		     | SEC_LINK_DUPLICATES_DISCARD);
-	  l_coff_comdat_sec = FALSE;
 	}
       else
 	{
 	  l_sec = l->linked.u.sec;
 	  l_owner = l_sec->owner;
 	  l_flags = l_sec->flags;
-	  l_coff_comdat_sec
-	    = !!bfd_coff_get_comdat_section (l_sec->owner, l_sec);
 	  l_name = section_signature (l_sec);
 	}
 
       /* We may have 2 different types of sections on the list: group
 	 sections and linkonce sections.  Match like sections.  */
       if ((flags & SEC_GROUP) == (l_flags & SEC_GROUP)
-	  && strcmp (name, l_name) == 0
-	  && !l_coff_comdat_sec)
+	  && strcmp (name, l_name) == 0)
 	{
 	  /* The section has already been linked.  See if we should
 	     issue a warning.  */
@@ -12629,7 +12625,7 @@ _bfd_elf_section_already_linked (bfd *abfd,
 		  && (l_owner->flags & BFD_PLUGIN) != 0)
 		{
 		  l->linked = *linked;
-		  return;
+		  return FALSE;
 		}
 	      break;
 
@@ -12711,10 +12707,11 @@ _bfd_elf_section_already_linked (bfd *abfd,
 		}
 	    }
 
-	  return;
+	  return TRUE;
 	}
     }
 
+  matched = FALSE;
   if (sec)
     {
       /* A single member comdat group section may be discarded by a
@@ -12742,6 +12739,7 @@ _bfd_elf_section_already_linked (bfd *abfd,
 			first->output_section = bfd_abs_section_ptr;
 			first->kept_section = l_sec;
 			sec->output_section = bfd_abs_section_ptr;
+			matched = TRUE;
 			break;
 		      }
 		  }
@@ -12767,6 +12765,7 @@ _bfd_elf_section_already_linked (bfd *abfd,
 		      {
 			sec->output_section = bfd_abs_section_ptr;
 			sec->kept_section = first;
+			matched = TRUE;
 			break;
 		      }
 		  }
@@ -12799,7 +12798,10 @@ _bfd_elf_section_already_linked (bfd *abfd,
 		    && CONST_STRNEQ (l_sec->name, ".gnu.linkonce.t."))
 		  {
 		    if (abfd != l_sec->owner)
-		      sec->output_section = bfd_abs_section_ptr;
+		      {
+			sec->output_section = bfd_abs_section_ptr;
+			matched = TRUE;
+		      }
 		    break;
 		  }
 	      }
@@ -12810,6 +12812,7 @@ _bfd_elf_section_already_linked (bfd *abfd,
   if (! bfd_section_already_linked_table_insert (already_linked_list,
 						 linked))
     info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));
+  return matched;
 }
 
 bfd_boolean
diff --git a/bfd/libbfd-in.h b/bfd/libbfd-in.h
index 0c98b47..db39f3c 100644
--- a/bfd/libbfd-in.h
+++ b/bfd/libbfd-in.h
@@ -481,8 +481,8 @@ extern bfd_boolean _bfd_generic_set_section_contents
 #define _bfd_nolink_bfd_link_split_section \
   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 #define _bfd_nolink_section_already_linked \
-  ((void (*) (bfd *, struct already_linked*, \
-	      struct bfd_link_info *)) bfd_void)
+  ((bfd_boolean (*) (bfd *, struct already_linked*, \
+		     struct bfd_link_info *)) bfd_false)
 #define _bfd_nolink_bfd_define_common_symbol \
   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, \
 		     struct bfd_link_hash_entry *)) bfd_false)
@@ -602,7 +602,7 @@ extern bfd_boolean _bfd_generic_final_link
 extern bfd_boolean _bfd_generic_link_split_section
   (bfd *, struct bfd_section *);
 
-extern void _bfd_generic_section_already_linked
+extern bfd_boolean _bfd_generic_section_already_linked
   (bfd *, struct already_linked *, struct bfd_link_info *);
 
 /* Generic reloc_link_order processing routine.  */
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index 33069b0..71188dc 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -486,8 +486,8 @@ extern bfd_boolean _bfd_generic_set_section_contents
 #define _bfd_nolink_bfd_link_split_section \
   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 #define _bfd_nolink_section_already_linked \
-  ((void (*) (bfd *, struct already_linked*, \
-	      struct bfd_link_info *)) bfd_void)
+  ((bfd_boolean (*) (bfd *, struct already_linked*, \
+		     struct bfd_link_info *)) bfd_false)
 #define _bfd_nolink_bfd_define_common_symbol \
   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, \
 		     struct bfd_link_hash_entry *)) bfd_false)
@@ -607,7 +607,7 @@ extern bfd_boolean _bfd_generic_final_link
 extern bfd_boolean _bfd_generic_link_split_section
   (bfd *, struct bfd_section *);
 
-extern void _bfd_generic_section_already_linked
+extern bfd_boolean _bfd_generic_section_already_linked
   (bfd *, struct already_linked *, struct bfd_link_info *);
 
 /* Generic reloc_link_order processing routine.  */
diff --git a/bfd/linker.c b/bfd/linker.c
index 8700c05..b3ccefd 100644
--- a/bfd/linker.c
+++ b/bfd/linker.c
@@ -2888,13 +2888,13 @@ FUNCTION
 	bfd_section_already_linked
 
 SYNOPSIS
-        void bfd_section_already_linked (bfd *abfd,
-					 struct already_linked *data,
-					 struct bfd_link_info *info);
+        bfd_boolean bfd_section_already_linked (bfd *abfd,
+						struct already_linked *data,
+						struct bfd_link_info *info);
 
 DESCRIPTION
 	Check if @var{data} has been already linked during a reloceatable
-	or final link.
+	or final link.  Return TRUE if it has.
 
 .#define bfd_section_already_linked(abfd, data, info) \
 .       BFD_SEND (abfd, _section_already_linked, (abfd, data, info))
@@ -2990,7 +2990,7 @@ bfd_section_already_linked_table_free (void)
 
 /* This is used on non-ELF inputs.  */
 
-void
+bfd_boolean
 _bfd_generic_section_already_linked (bfd *abfd,
 				     struct already_linked *linked,
 				     struct bfd_link_info *info)
@@ -3006,7 +3006,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
   if (name)
     {
       sec = NULL;
-      flags = SEC_GROUP | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
+      flags = SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
       s_comdat = NULL;
     }
   else
@@ -3014,7 +3014,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
       sec = linked->u.sec;
       flags = sec->flags;
       if ((flags & SEC_LINK_ONCE) == 0)
-	return;
+	return FALSE;
 
       s_comdat = bfd_coff_get_comdat_section (abfd, sec);
 
@@ -3049,9 +3049,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
 	  l_sec = NULL;
 	  l_owner = l->linked.u.abfd;
 	  l_comdat = NULL;
-	  l_flags = (SEC_GROUP
-		     | SEC_LINK_ONCE
-		     | SEC_LINK_DUPLICATES_DISCARD);
+	  l_flags = SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
 	}
       else
 	{
@@ -3100,7 +3098,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
 		  && (l_owner->flags & BFD_PLUGIN) != 0)
 		{
 		  l->linked = *linked;
-		  return;
+		  return FALSE;
 		}
 	      break;
 
@@ -3136,7 +3134,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
 	      sec->kept_section = l_sec;
 	    }
 
-	  return;
+	  return TRUE;
 	}
     }
 
@@ -3144,6 +3142,7 @@ _bfd_generic_section_already_linked (bfd *abfd,
   if (! bfd_section_already_linked_table_insert (already_linked_list,
 						 linked))
     info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));
+  return FALSE;
 }
 
 /* Convert symbols in excluded output sections to use a kept section.  */
diff --git a/bfd/targets.c b/bfd/targets.c
index c34ce69..3dfa145 100644
--- a/bfd/targets.c
+++ b/bfd/targets.c
@@ -512,8 +512,8 @@ BFD_JUMP_TABLE macros.
 .
 .  {* Check if SEC has been already linked during a reloceatable or
 .     final link.  *}
-.  void (*_section_already_linked) (bfd *, struct already_linked *,
-.				    struct bfd_link_info *);
+.  bfd_boolean (*_section_already_linked) (bfd *, struct already_linked *,
+.					   struct bfd_link_info *);
 .
 .  {* Define a common symbol.  *}
 .  bfd_boolean (*_bfd_define_common_symbol) (bfd *, struct bfd_link_info *,