Remove the group section if all members are removed.

binutils/

2011-09-15  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/13180
	* objcopy.c (is_strip_section_1): New.
	(is_strip_section): Use it.  Remove the group section if all
	members are removed.

binutils/testsuite/

2011-09-15  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/13180
	* binutils-all/group-6.d: New.
	* binutils-all/group-6.s: Likewise.

	* binutils-all/objcopy.exp: Run group-6 for ELF targrts.

6 files changed, 56 insertions, 2 deletions

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 4f6d032..144dbff 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,10 @@
+2011-09-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR binutils/13180
+	* objcopy.c (is_strip_section_1): New.
+	(is_strip_section): Use it.  Remove the group section if all
+	members are removed.
+
 2011-09-08  Nick Clifton  <nickc@redhat.com>
 
 	* po/ja.po: Updated Japanese translation.
diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index b64f3d0..31ac0a2 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -925,10 +925,10 @@ group_signature (asection *group)
   return NULL;
 }
 
-/* See if a section is being removed.  */
+/* See if a non-group section is being removed.  */
 
 static bfd_boolean
-is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+is_strip_section_1 (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
 {
   if (sections_removed || sections_copied)
     {
@@ -955,10 +955,22 @@ is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
 	return FALSE;
     }
 
+  return FALSE;
+}
+
+/* See if a section is being removed.  */
+
+static bfd_boolean
+is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+{
+  if (is_strip_section_1 (abfd, sec))
+    return TRUE;
+
   if ((bfd_get_section_flags (abfd, sec) & SEC_GROUP) != 0)
     {
       asymbol *gsym;
       const char *gname;
+      asection *elt, *first;
 
       /* PR binutils/3181
 	 If we are going to strip the group signature symbol, then
@@ -972,6 +984,19 @@ is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
 	   && !is_specified_symbol (gname, keep_specific_htab))
 	  || is_specified_symbol (gname, strip_specific_htab))
 	return TRUE;
+
+      /* Remove the group section if all members are removed.  */
+      first = elt = elf_next_in_group (sec);
+      while (elt != NULL)
+	{
+	  if (!is_strip_section_1 (abfd, elt))
+	    return FALSE;
+	  elt = elf_next_in_group (elt);
+	  if (elt == first)
+	    break;
+	}
+
+      return TRUE;
     }
 
   return FALSE;
diff --git a/binutils/testsuite/ChangeLog b/binutils/testsuite/ChangeLog
index efc1055..597357b 100644
--- a/binutils/testsuite/ChangeLog
+++ b/binutils/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2011-09-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR binutils/13180
+	* binutils-all/group-6.d: New.
+	* binutils-all/group-6.s: Likewise.
+
+	* binutils-all/objcopy.exp: Run group-6 for ELF targrts.
+
 2011-07-22  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* binutils-all/elfedit.exp: Run elfedit-4.
diff --git a/binutils/testsuite/binutils-all/group-6.d b/binutils/testsuite/binutils-all/group-6.d
new file mode 100644
index 0000000..3319745
--- /dev/null
+++ b/binutils/testsuite/binutils-all/group-6.d
@@ -0,0 +1,9 @@
+#PROG: objcopy
+#objcopy: --remove-section .text.foo
+#name: copy removing all group member
+#objdump: -fw
+
+#...
+.*: +file format .*
+architecture: .*
+#pass
diff --git a/binutils/testsuite/binutils-all/group-6.s b/binutils/testsuite/binutils-all/group-6.s
new file mode 100644
index 0000000..e4c2bda
--- /dev/null
+++ b/binutils/testsuite/binutils-all/group-6.s
@@ -0,0 +1,4 @@
+	.text
+	.byte	0
+	.section        .text.foo,"axG",%progbits,foo,comdat
+	.byte	0
diff --git a/binutils/testsuite/binutils-all/objcopy.exp b/binutils/testsuite/binutils-all/objcopy.exp
index 7ad8497..a22e98c 100644
--- a/binutils/testsuite/binutils-all/objcopy.exp
+++ b/binutils/testsuite/binutils-all/objcopy.exp
@@ -937,6 +937,7 @@ if [is_elf_format] {
     objcopy_test_readelf "ELF group" group-3.s
     objcopy_test_readelf "ELF group" group-4.s
     run_dump_test "group-5"
+    run_dump_test "group-6"
     run_dump_test "copy-1"
     run_dump_test "note-1"
 }