Check if a symbol is hidden by linker script.

bfd/

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

	PR ld/12975
	* bfd-in.h (bfd_elf_size_dynamic_sections): Remove pointer
	to struct bfd_elf_version_tree.

	* elflink.c (elf_info_failed): Remove verdefs.
	(_bfd_elf_export_symbol): Updated.
	_bfd_elf_link_assign_sym_version): Likewise.
	(bfd_elf_size_dynamic_sections): Remove pointer to struct
	bfd_elf_version_tree.  Updated.
	(bfd_elf_gc_mark_dynamic_ref_symbol): Check if a symbol is hidden
	by linker script.

	* linker.c (bfd_hide_sym_by_version): New.

	* bfd-in2.h: Regenerated.

include/

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

	PR ld/12975
	* bfdlink.h (bfd_link_info): Add version_info.

ld/

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

	PR ld/12975
	* ldlang.c (lang_elf_version_info): Removed.
	(lang_register_vers_node): Replace lang_elf_version_info with
	link_info.version_info.
	(lang_add_vers_depend): Likewise.
	* pe-dll.c (process_def_file_and_drectve): Likewise.
	* emultempl/solaris2.em (elf_solaris2_before_allocation): Likewise.

	* ldlang.h (lang_elf_version_info): Removed.

	* plugin.c  (is_visible_from_outside): Check if symbol is hidden
	by version script.

	* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation):
	Remove lang_elf_version_info.

ld/testsuite/

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

	PR ld/12975
	* ld-elf/pr12975.d: New.
	* ld-elf/pr12975.s: Likewise.
	* ld-elf/pr12975.t: Likewise.

1 files changed, 7 insertions, 11 deletions

diff --git a/ld/ldlang.c b/ld/ldlang.c
index 5b548d0b4a..7251a86b88 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -7458,10 +7458,6 @@ lang_leave_overlay (etree_type *lma_expr,
 
 /* Version handling.  This is only useful for ELF.  */
 
-/* This global variable holds the version tree that we build.  */
-
-struct bfd_elf_version_tree *lang_elf_version_info;
-
 /* If PREV is NULL, return first version pattern matching particular symbol.
    If PREV is non-NULL, return first version pattern matching particular
    symbol after PREV (previously returned by lang_vers_match).  */
@@ -7803,8 +7799,8 @@ lang_register_vers_node (const char *name,
   if (name == NULL)
     name = "";
 
-  if ((name[0] == '\0' && lang_elf_version_info != NULL)
-      || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0'))
+  if (link_info.version_info != NULL
+      && (name[0] == '\0' || link_info.version_info->name[0] == '\0'))
     {
       einfo (_("%X%P: anonymous version tag cannot be combined"
 	       " with other version tags\n"));
@@ -7813,7 +7809,7 @@ lang_register_vers_node (const char *name,
     }
 
   /* Make sure this node has a unique name.  */
-  for (t = lang_elf_version_info; t != NULL; t = t->next)
+  for (t = link_info.version_info; t != NULL; t = t->next)
     if (strcmp (t->name, name) == 0)
       einfo (_("%X%P: duplicate version tag `%s'\n"), name);
 
@@ -7825,7 +7821,7 @@ lang_register_vers_node (const char *name,
 
   for (e1 = version->globals.list; e1 != NULL; e1 = e1->next)
     {
-      for (t = lang_elf_version_info; t != NULL; t = t->next)
+      for (t = link_info.version_info; t != NULL; t = t->next)
 	{
 	  struct bfd_elf_version_expr *e2;
 
@@ -7852,7 +7848,7 @@ lang_register_vers_node (const char *name,
 
   for (e1 = version->locals.list; e1 != NULL; e1 = e1->next)
     {
-      for (t = lang_elf_version_info; t != NULL; t = t->next)
+      for (t = link_info.version_info; t != NULL; t = t->next)
 	{
 	  struct bfd_elf_version_expr *e2;
 
@@ -7888,7 +7884,7 @@ lang_register_vers_node (const char *name,
   else
     version->vernum = 0;
 
-  for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
+  for (pp = &link_info.version_info; *pp != NULL; pp = &(*pp)->next)
     ;
   *pp = version;
 }
@@ -7904,7 +7900,7 @@ lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name)
   ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
   ret->next = list;
 
-  for (t = lang_elf_version_info; t != NULL; t = t->next)
+  for (t = link_info.version_info; t != NULL; t = t->next)
     {
       if (strcmp (t->name, name) == 0)
 	{