PR27311, ld.bfd (symbol from plugin): undefined reference

A default versioned symbol definition in a shared library is
overridden by an unversioned definition in a regular object file, and
thus should not be reason to make an as-needed library needed.

bfd/
	PR 27311
	* elflink.c (_bfd_elf_add_default_symbol): Add override parameter.
	Use when handling default versioned symbol.  Rename existing
	override variable to nondef_override and use for non-default
	versioned symbol.
	(elf_link_add_object_symbols): Adjust call to suit.  Don't
	pull in as-needed libraries when override is set.
ld/
	* testsuite/ld-plugin/pr27311.d,
	* testsuite/ld-plugin/pr27311.ver,
	* testsuite/ld-plugin/pr27311a.c,
	* testsuite/ld-plugin/pr27311b.c,
	* testsuite/ld-plugin/pr27311c.c: New testcase.
	* testsuite/ld-plugin/lto.exp: Run it.  Correct PR14918 and
	PR12982 entries.

7 files changed, 40 insertions, 6 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 6cf9d70..450137a 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,13 @@
+2021-02-02  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/ld-plugin/pr27311.d,
+	* testsuite/ld-plugin/pr27311.ver,
+	* testsuite/ld-plugin/pr27311a.c,
+	* testsuite/ld-plugin/pr27311b.c,
+	* testsuite/ld-plugin/pr27311c.c: New testcase.
+	* testsuite/ld-plugin/lto.exp: Run it.  Correct PR14918 and
+	PR12982 entries.
+
 2021-02-01  Emery Hemingway  <ehmry@posteo.net>
 
 	* configure.tgt: Add *-*-genode* as a target for AArch64 and x86.
diff --git a/ld/testsuite/ld-plugin/lto.exp b/ld/testsuite/ld-plugin/lto.exp
index dbda6c4..324adcd 100644
--- a/ld/testsuite/ld-plugin/lto.exp
+++ b/ld/testsuite/ld-plugin/lto.exp
@@ -415,6 +415,18 @@ set lto_link_elf_tests [list \
   [list {pr26806.so} \
    {-shared} {-fpic -O2 -flto} \
    {pr26806.c} {{nm {-D} pr26806.d}} {pr26806.so}] \
+  [list {pr27311a.so} \
+   {-shared -Wl,--version-script=pr27311.ver} {-fPIC} \
+   {pr27311a.c} {} {pr27311a.so}] \
+  [list {pr27311b.so} \
+   {-shared -Wl,--no-as-needed tmpdir/pr27311a.so} {-fPIC} \
+   {pr27311b.c} {} {pr27311b.so}] \
+  [list {pr27311c.o} \
+   {} {-flto} \
+   {pr27311c.c} {} {} {c}] \
+  [list {pr27311} \
+   {tmpdir/pr27311c.o -Wl,--no-as-needed,--rpath-link=. tmpdir/pr27311b.so} {} \
+   {dummy.c} {{readelf {--dyn-syms --wide} pr27311.d}} {pr27311}] \
 ]
 
 # PR 14918 checks that libgcc is not spuriously included in a shared link of
@@ -423,11 +435,10 @@ set lto_link_elf_tests [list \
 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 # test fails.  Hence this code to skip the test.
 if { ! [istarget "arm*-*-*"] } {
-    lappend lto_link_elf_tests [list \
+    lappend lto_link_elf_tests \
   [list "PR ld/14918" \
    "-flto" "-flto" \
-   {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
-  ]
+   {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"]
 }
 
 # PR 12982 checks that an executable stack is not created by default
@@ -435,11 +446,10 @@ if { ! [istarget "arm*-*-*"] } {
 # executable stack for syscall restarts and signal returns, so we
 # skip this test for that target.
 if { ! [istarget "hppa*-*-*"] } {
-    lappend lto_link_elf_tests [list \
+    lappend lto_link_elf_tests \
   [list "PR ld/12982" \
    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
-   {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
-  ]
+   {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"]
 }
 
 # Check final symbols in executables.
diff --git a/ld/testsuite/ld-plugin/pr27311.d b/ld/testsuite/ld-plugin/pr27311.d
new file mode 100644
index 0000000..debf41c
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27311.d
@@ -0,0 +1,4 @@
+#failif
+#...
+.* _*inlib1.*
+#...
diff --git a/ld/testsuite/ld-plugin/pr27311.ver b/ld/testsuite/ld-plugin/pr27311.ver
new file mode 100644
index 0000000..324daf0
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27311.ver
@@ -0,0 +1,3 @@
+LIBFOO {
+  *;
+};
diff --git a/ld/testsuite/ld-plugin/pr27311a.c b/ld/testsuite/ld-plugin/pr27311a.c
new file mode 100644
index 0000000..3149847
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27311a.c
@@ -0,0 +1 @@
+void inlib1(void) {}
diff --git a/ld/testsuite/ld-plugin/pr27311b.c b/ld/testsuite/ld-plugin/pr27311b.c
new file mode 100644
index 0000000..ed9c8a7
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27311b.c
@@ -0,0 +1 @@
+void inlib2(void) {}
diff --git a/ld/testsuite/ld-plugin/pr27311c.c b/ld/testsuite/ld-plugin/pr27311c.c
new file mode 100644
index 0000000..6712499
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27311c.c
@@ -0,0 +1,5 @@
+void inlib1(void) {}
+int main()
+{
+  return 0;
+}