Set unique_global only for definition

bfd/

	PR ld/15167
	* elf64-ia64-vms.c (elf64_vms_link_add_object_symbols): Set
	unique_global only for definition.
	* elflink.c (_bfd_elf_merge_symbol): Don't set unique_global
	here.
	(elf_link_add_object_symbols): Set unique_global only
	for definition.

ld/testsuite/

	PR ld/15167
	* ld-unique/unique.exp: Add a test for shared library with
	reference.

1 files changed, 18 insertions, 0 deletions

diff --git a/ld/testsuite/ld-unique/unique.exp b/ld/testsuite/ld-unique/unique.exp
index 646e5ec481..9bc65e0ce2 100644
--- a/ld/testsuite/ld-unique/unique.exp
+++ b/ld/testsuite/ld-unique/unique.exp
@@ -145,6 +145,12 @@ if ![default_ld_link $ld "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_emp
     set fails [expr $fails + 1]
 }
 
+# Create shared library containing unique symbol with reference.
+if ![ld_simple_link $ld "tmpdir/libunique_shared_ref.so" "-shared tmpdir/unique_shared.o tmpdir/unique_empty.o"] {
+    fail "Could not create a shared library containing an unique symbol with reference"
+    set fails [expr $fails + 1]
+}
+
 if { $fails != 0 } {
     return
 }
@@ -220,6 +226,17 @@ if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} {
     set fails [expr $fails + 1]
 }
 
+# Check the unique shared library with reference.
+if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} {
+    fail "Shared library containing unique with reference does not have an OS/ABI field of GNU"
+    set fails [expr $fails + 1]
+}
+
+if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} {
+    fail "Shared library containing unique with reference does not contain an UNIQUE symbol"
+    set fails [expr $fails + 1]
+}
+
 if { $fails == 0 } {
   pass "Checking unique PIC object"
 }
@@ -245,6 +262,7 @@ if { $verbose < 1 } {
     remote_file host delete "tmpdir/unique.o"
     remote_file host delete "tmpdir/unique_shared.o"
     remote_file host delete "tmpdir/libunique_shared.so"
+    remote_file host delete "tmpdir/libunique_shared_ref.so"
     remote_file host delete "tmpdir/unique_prog"
     remote_file host delete "tmpdir/unique_shared_prog"
 }