Fix --gc-sections failure with symbol versioning.

bfd/

2011-09-28  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/13195
	* elflink.c (_bfd_elf_merge_symbol): Don't set dynamic_def when
	clearing def_dynamic.
	(elf_link_add_object_symbols): Likewise.  Set dynamic_def when
	setting def_dynamic.
	(bfd_elf_gc_mark_dynamic_ref_symbol): Check if a symbol is
	versioned.

ld/testsuite/

2011-09-28  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/13195
	* ld-elf/elf.exp: Add a C link testcase for PR ld/13195.

	* ld-elf/pr13195.c: New.
	* ld-elf/pr13195.d: Likewise.
	* ld-elf/pr13195.s: Likewise.
	* ld-elf/pr13195.t: Likewise.

diff --git a/bfd/elflink.c b/bfd/elflink.c
index 9ccf37d..a15ad27 100644 (file)
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -1238,7 +1238,6 @@ _bfd_elf_merge_symbol (bfd *abfd,
        {
          h->def_dynamic = 0;
          h->ref_dynamic = 1;
-         h->dynamic_def = 1;
        }
       /* FIXME: Should we check type and size for protected symbol?  */
       h->size = 0;
@@ -4353,7 +4352,6 @@ error_free_dyn:
                    {
                      h->def_dynamic = 0;
                      h->ref_dynamic = 1;
-                     h->dynamic_def = 1;
                    }
                }
              if (! info->executable
@@ -4366,7 +4364,10 @@ error_free_dyn:
              if (! definition)
                h->ref_dynamic = 1;
              else
-               h->def_dynamic = 1;
+               {
+                 h->def_dynamic = 1;
+                 h->dynamic_def = 1;
+               }
              if (h->def_regular
                  || h->ref_regular
                  || (h->u.weakdef != NULL
@@ -11914,8 +11915,9 @@ bfd_elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, void *inf)
              && h->def_regular
              && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
              && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
-             && !bfd_hide_sym_by_version (info->version_info,
-                                          h->root.root.string))))
+             && (strchr (h->root.root.string, ELF_VER_CHR) != NULL
+                 || !bfd_hide_sym_by_version (info->version_info,
+                                              h->root.root.string)))))
     h->root.u.def.section->flags |= SEC_KEEP;
 
   return TRUE;

diff --git a/ld/testsuite/ld-elf/elf.exp b/ld/testsuite/ld-elf/elf.exp
index 4a00b81..866c866 100644 (file)
--- a/ld/testsuite/ld-elf/elf.exp
+++ b/ld/testsuite/ld-elf/elf.exp
@@ -138,6 +138,11 @@ if ![isnative] {
     return
 }
 
+run_cc_link_tests {
+    {"PR ld/13195" "-Wl,--gc-sections" ""
+     {pr13195.c} {} "pr13195"}
+}
+
 set array_tests {
     {"preinit array" "" "" {preinit.c} "preinit" "preinit.out"}
     {"init array" "" "" {init.c} "init" "init.out"}

diff --git a/ld/testsuite/ld-elf/pr13195.c b/ld/testsuite/ld-elf/pr13195.c
new file mode 100644 (file)
index 0000000..a9bce4a
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr13195.c
@@ -0,0 +1,5 @@
+int
+main ()
+{
+  return 0;
+}

diff --git a/ld/testsuite/ld-elf/pr13195.d b/ld/testsuite/ld-elf/pr13195.d
new file mode 100644 (file)
index 0000000..796102b
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr13195.d
@@ -0,0 +1,10 @@
+#ld: --gc-sections -shared -version-script pr13195.t
+#readelf: -s --wide -D
+#target: *-*-linux* *-*-gnu*
+#notarget: arc-*-* d30v-*-* dlx-*-* i960-*-* or32-*-* pj*-*-*
+#notarget: hppa64-*-* i370-*-* i860-*-* ia64-*-* mep-*-* mn10200-*-*
+# generic linker targets don't support --gc-sections, nor do a bunch of others
+
+#...
+ +[0-9]+ +[0-9]+: +[0-9a-f]+ +[0-9]+ +FUNC +GLOBAL +DEFAULT +[1-9]+ foo
+#pass

diff --git a/ld/testsuite/ld-elf/pr13195.s b/ld/testsuite/ld-elf/pr13195.s
new file mode 100644 (file)
index 0000000..409b5af
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr13195.s
@@ -0,0 +1,6 @@
+       .section .text.new_foo,"ax",%progbits
+       .globl  new_foo
+       .type   new_foo, %function
+new_foo:
+       .byte 0
+       .symver new_foo,foo@@VERS_2.0

diff --git a/ld/testsuite/ld-elf/pr13195.t b/ld/testsuite/ld-elf/pr13195.t
new file mode 100644 (file)
index 0000000..2b82842
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr13195.t
@@ -0,0 +1,6 @@
+VERS_2.0 {
+global:
+  foo;
+local:
+  *;
+};