* elf.c (_bfd_elf_init_private_section_data): Tweak union copy.

	(bfd_section_from_shdr): Don't change SHT_GROUP section name.
	* elflink.c (section_signature): New function.
	(_bfd_elf_section_already_linked): Use it.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 25214d8..7ca4070 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2008-09-28  Alan Modra  <amodra@bigpond.net.au>
+
+       * elf.c (_bfd_elf_init_private_section_data): Tweak union copy.
+       (bfd_section_from_shdr): Don't change SHT_GROUP section name.
+       * elflink.c (section_signature): New function.
+       (_bfd_elf_section_already_linked): Use it.
+
 2008-09-19  Alan Modra  <amodra@bigpond.net.au>
 
        * elf32-ppc.c (ppc_elf_finish_dynamic_sections): Handle vxworks

diff --git a/bfd/elf.c b/bfd/elf.c
index 7f9853e..e8c6c23 100644 (file)
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -1863,14 +1863,8 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
       return TRUE;
 
     case SHT_GROUP:
-      /* We need a BFD section for objcopy and relocatable linking,
-        and it's handy to have the signature available as the section
-        name.  */
       if (! IS_VALID_GROUP_SECTION_HEADER (hdr))
        return FALSE;
-      name = group_signature (abfd, hdr);
-      if (name == NULL)
-       return FALSE;
       if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
        return FALSE;
       if (hdr->contents != NULL)
@@ -6019,7 +6013,7 @@ _bfd_elf_init_private_section_data (bfd *ibfd,
          if (elf_section_flags (isec) & SHF_GROUP)
            elf_section_flags (osec) |= SHF_GROUP;
          elf_next_in_group (osec) = elf_next_in_group (isec);
-         elf_group_name (osec) = elf_group_name (isec);
+         elf_section_data (osec)->group = elf_section_data (isec)->group;
        }
     }
 

diff --git a/bfd/elflink.c b/bfd/elflink.c
index ab6c2db..1c7f79a 100644 (file)
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -11997,8 +11997,21 @@ bfd_elf_discard_info (bfd *output_bfd, struct bfd_link_info *info)
   return ret;
 }
 
+/* For a SHT_GROUP section, return the group signature.  For other
+   sections, return the normal section name.  */
+
+static const char *
+section_signature (asection *sec)
+{
+  if ((sec->flags & SEC_GROUP) != 0
+      && elf_next_in_group (sec) != NULL
+      && elf_group_name (elf_next_in_group (sec)) != NULL)
+    return elf_group_name (elf_next_in_group (sec));
+  return sec->name;
+}
+
 void
-_bfd_elf_section_already_linked (bfd *abfd, struct bfd_section *sec,
+_bfd_elf_section_already_linked (bfd *abfd, asection *sec,
                                 struct bfd_link_info *info)
 {
   flagword flags;
@@ -12038,7 +12051,7 @@ _bfd_elf_section_already_linked (bfd *abfd, struct bfd_section *sec,
      causes trouble for MIPS ELF, which relies on link once semantics
      to handle the .reginfo section correctly.  */
 
-  name = bfd_get_section_name (abfd, sec);
+  name = section_signature (sec);
 
   if (CONST_STRNEQ (name, ".gnu.linkonce.")
       && (p = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL)
@@ -12053,7 +12066,7 @@ _bfd_elf_section_already_linked (bfd *abfd, struct bfd_section *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->sec->flags & SEC_GROUP)
-         && strcmp (name, l->sec->name) == 0
+         && strcmp (name, section_signature (l->sec)) == 0
          && bfd_coff_get_comdat_section (l->sec->owner, l->sec) == NULL)
        {
          /* The section has already been linked.  See if we should