Add PR27441 testcase

Add PR27441 testcase

[Alan Modra]

	PR 27441
	* testsuite/ld-plugin/pr27441a.c,
	* testsuite/ld-plugin/pr27441b.c,
	* testsuite/ld-plugin/pr27441c.c,
	* testsuite/ld-plugin/pr27441c.d: New test.
	* testsuite/ld-plugin/lto.exp: Run it.

diff --git a/ld/testsuite/ld-plugin/lto.exp b/ld/testsuite/ld-plugin/lto.exp
index 38cea30aed..2271211367 100644
--- a/ld/testsuite/ld-plugin/lto.exp
+++ b/ld/testsuite/ld-plugin/lto.exp
@@ -448,6 +448,18 @@ set lto_link_elf_tests [list \
   [list {pr27311-2} \
    {tmpdir/pr27311d.o -Wl,--no-as-needed,--rpath-link=. tmpdir/pr27311b.so} {} \
    {dummy.c} {{readelf {--dyn-syms --wide} pr27311.d}} {pr27311-2}] \
+  [list {pr27441a.so} \
+   {-shared} {-fPIC} \
+   {pr27441a.c} {} {pr27441a.so}] \
+  [list {pr27441b.so} \
+   {-shared} {-fPIC} \
+   {pr27441b.c} {} {pr27441b.so}] \
+  [list {pr27441c.o} \
+   {} {-fPIC -flto} \
+   {pr27441c.c} {} {}] \
+  [list {pr27441c.so} \
+   {-shared -fPIC -Wl,--as-needed tmpdir/pr27441c.o tmpdir/pr27441b.so tmpdir/pr27441a.so} {-fPIC} \
+   {dummy.c} {{readelf {-dW} pr27441c.d}} {pr27441c.so}] \
 ]
 
 # PR 14918 checks that libgcc is not spuriously included in a shared link of
diff --git a/ld/testsuite/ld-plugin/pr27441a.c b/ld/testsuite/ld-plugin/pr27441a.c
new file mode 100644
index 0000000000..59034df4ad
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27441a.c
@@ -0,0 +1,2 @@
+int func1 (void) { return 1; }
+int func2 (void) { return 2; }
diff --git a/ld/testsuite/ld-plugin/pr27441b.c b/ld/testsuite/ld-plugin/pr27441b.c
new file mode 100644
index 0000000000..9f2ed199ba
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27441b.c
@@ -0,0 +1 @@
+int __attribute__((weak)) func1 (void) { return 3; }
diff --git a/ld/testsuite/ld-plugin/pr27441c.c b/ld/testsuite/ld-plugin/pr27441c.c
new file mode 100644
index 0000000000..207a183ca2
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27441c.c
@@ -0,0 +1,8 @@
+extern int func1 (void);
+extern int func2 (void);
+
+int
+callthem (void)
+{
+  return func1 () + func2 ();
+}
diff --git a/ld/testsuite/ld-plugin/pr27441c.d b/ld/testsuite/ld-plugin/pr27441c.d
new file mode 100644
index 0000000000..d0bea66218
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr27441c.d
@@ -0,0 +1,4 @@
+#...
+ .* \(NEEDED\) +Shared library: \[tmpdir/pr27441b.so\]
+ .* \(NEEDED\) +Shared library: \[tmpdir/pr27441a.so\]
+#pass

-- 
Alan Modra
Australia Development Lab, IBM