[1/3] Use version index 1 for defined symbols

[Michael Matz]

It's reasonable to use version index 0 for undefined
symbols, so let's continue doing that.  For defined (global)
symbols that aren't otherwise versioned continue using
VER_NDX_GLOBAL (partly reverting behaviour introduced in
commit f685e395).

bfd/
	PR ld/33577
	* elflink.c (elf_link_output_extsym): Don't set noversion
	for defined syms.

ld/
	PR ld/33577
	* ld-elfvers/vers16.dsym: Add back the "Base" version for
	defined syms.
---
I got approval for this on in bugzilla, but as there are relations to a 
readelf change I'll make this part of the whole series.

---
 bfd/elflink.c                       | 8 +-------
 ld/testsuite/ld-elfvers/vers16.dsym | 2 +-
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/bfd/elflink.c b/bfd/elflink.c
index ec3ad9735fe..7d284c08c00 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -11158,13 +11158,7 @@ elf_link_output_extsym (struct bfd_hash_entry *bh, void *data)
 	  else
 	    {
 	      if (h->verinfo.vertree == NULL)
-		{
-		  iversym.vs_vers = 1;
-		  if (elf_tdata (flinfo->output_bfd)->cverdefs == 0)
-		    /* Defined symbol has no version if there is no
-		       linker version script.  */
-		    noversion = true;
-		}
+		iversym.vs_vers = 1;
 	      else
 		iversym.vs_vers = h->verinfo.vertree->vernum + 1;
 	      if (flinfo->info->create_default_symver)
diff --git a/ld/testsuite/ld-elfvers/vers16.dsym b/ld/testsuite/ld-elfvers/vers16.dsym
index 076d0eb07ed..a32abd7aad9 100644
--- a/ld/testsuite/ld-elfvers/vers16.dsym
+++ b/ld/testsuite/ld-elfvers/vers16.dsym
@@ -1,2 +1,2 @@
-[0-9a-f]+ g +DF (\.text|\.opd|\*ABS\*)	[0-9a-f]+ +(0x[0-9a-f]+ )?_?show_bar
+[0-9a-f]+ g +DF (\.text|\.opd|\*ABS\*)	[0-9a-f]+( +Base +)? +(0x[0-9a-f]+ )?_?show_bar
 [0-9a-f]+ +DF \*UND\*	[0-9a-f]+ +(0x[0-9a-f]+ )?_?show_foo
-- 
2.48.1