Mark symbol in executables if it matches dynamic_list

bfd/

	PR gold/16530
	* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Mark symbol in
	executables if it matches dynamic_list.

ld/testsuite/

	PR gold/16530
	* ld-elf/dynamic-1.c: New file.
	* ld-elf/dynamic-1.rd: Likewise.
	* ld-elf/dynamic-1.syms: Likewise.

	* ld-elf/shared.exp (build_tests): Add dynamic-1.

bfd/ChangeLog

@@ -1,3 +1,9 @@
+2014-02-10  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gold/16530
+	* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Mark symbol in
+	executables if it matches dynamic_list.
+
 2014-02-10  Alan Modra  <amodra@gmail.com>
 
 	* po/SRC-POTFILES.in: Regenerate.

bfd/elflink.c

@@ -12140,11 +12140,15 @@ bfd_boolean
 bfd_elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, void *inf)
 {
   struct bfd_link_info *info = (struct bfd_link_info *) inf;
+  struct bfd_elf_dynamic_list *d = info->dynamic_list;
 
   if ((h->root.type == bfd_link_hash_defined
        || h->root.type == bfd_link_hash_defweak)
       && (h->ref_dynamic
-	  || ((!info->executable || info->export_dynamic)
+	  || ((!info->executable
+	       || info->export_dynamic
+	       || (d != NULL
+		   && (*d->match) (&d->head, NULL, h->root.root.string)))
 	      && h->def_regular
 	      && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
 	      && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN

ld/testsuite/ChangeLog

@@ -1,3 +1,12 @@
+2014-02-10  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gold/16530
+	* ld-elf/dynamic-1.c: New file.
+	* ld-elf/dynamic-1.rd: Likewise.
+	* ld-elf/dynamic-1.syms: Likewise.
+
+	* ld-elf/shared.exp (build_tests): Add dynamic-1.
+
 2014-02-02  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 
 	* ld-scripts/rgn-at9.d: New file.

ld/testsuite/ld-elf/dynamic-1.c

@@ -0,0 +1,10 @@
+void
+dynamic ()
+{
+}
+
+int
+main ()
+{
+  return 0;
+}

ld/testsuite/ld-elf/dynamic-1.rd

@@ -0,0 +1,5 @@
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +FUNC +GLOBAL +DEFAULT +[0-9]+ +_?dynamic
+#...

ld/testsuite/ld-elf/dynamic-1.syms

@@ -0,0 +1,3 @@
+{
+  dynamic;
+};

ld/testsuite/ld-elf/shared.exp

@@ -227,6 +227,9 @@ set build_tests {
   {"Build rdynamic-1"
    "-rdynamic -Wl,--gc-sections" "-ffunction-sections"
    {rdynamic-1.c} {{readelf {-s} rdynamic-1.rd}} "rdynamic-1"}
+  {"Build dynamic-1"
+   "-Wl,--dynamic-list,dynamic-1.syms -Wl,--gc-sections" "-ffunction-sections"
+   {dynamic-1.c} {{readelf {-s} dynamic-1.rd}} "dynamic-1"}
 }
 
 run_cc_link_tests $build_tests