From 20ea3acc727f3be6322dfbd881e506873535231d Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 11 Feb 2022 15:13:19 -0800
Subject: ld: Keep indirect symbol from IR if referenced from shared object

Don't change indirect symbol defined in IR to undefined if it is
referenced from shared object.

bfd/

	PR ld/28879
	* elflink.c (_bfd_elf_merge_symbol): Don't change indirect
	symbol defined in IR to undefined if it is referenced from
	shared object.

ld/

	PR ld/28879
	* testsuite/ld-plugin/lto.exp: Run PR ld/28879 tests.
	* testsuite/ld-plugin/pr28879a.cc: New file.
	* testsuite/ld-plugin/pr28879b.cc: Likewise.
---
 ld/testsuite/ld-plugin/lto.exp     | 26 ++++++++++++++++++++++++++
 ld/testsuite/ld-plugin/pr28879a.cc |  7 +++++++
 ld/testsuite/ld-plugin/pr28879b.cc |  8 ++++++++
 3 files changed, 41 insertions(+)
 create mode 100644 ld/testsuite/ld-plugin/pr28879a.cc
 create mode 100644 ld/testsuite/ld-plugin/pr28879b.cc

(limited to 'ld')

diff --git a/ld/testsuite/ld-plugin/lto.exp b/ld/testsuite/ld-plugin/lto.exp
index a70a845..64b8802 100644
--- a/ld/testsuite/ld-plugin/lto.exp
+++ b/ld/testsuite/ld-plugin/lto.exp
@@ -471,6 +471,32 @@ set lto_link_elf_tests [list \
   [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}] \
+  [list \
+   "Build libpr28879a.so" \
+   "-shared" \
+   "-O0 -fpic" \
+   {pr28879a.cc} \
+   {} \
+   "libpr28879a.so" \
+   "c++" \
+  ] \
+  [list \
+   "Build libpr28879b.so" \
+   "-shared -Wl,--no-as-needed tmpdir/libpr28879a.so" \
+   "-O2 -fpic" \
+   {dummy.c} \
+   {} \
+   "libpr28879b.so" \
+  ] \
+  [list \
+   "Build pr28879" \
+   "-Wl,--no-as-needed tmpdir/libpr28879b.so -Wl,-rpath-link,." \
+   "-O0 -flto -D_GLIBCXX_ASSERTIONS" \
+   {pr28879b.cc} \
+   {} \
+   "pr28879" \
+   "c++" \
+  ] \
 ]
 
 # PR 14918 checks that libgcc is not spuriously included in a shared link of
diff --git a/ld/testsuite/ld-plugin/pr28879a.cc b/ld/testsuite/ld-plugin/pr28879a.cc
new file mode 100644
index 0000000..8307a42
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr28879a.cc
@@ -0,0 +1,7 @@
+#include <string>
+
+void
+func (std::string *s)
+{
+  delete s;
+}
diff --git a/ld/testsuite/ld-plugin/pr28879b.cc b/ld/testsuite/ld-plugin/pr28879b.cc
new file mode 100644
index 0000000..02fc351
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr28879b.cc
@@ -0,0 +1,8 @@
+#include <string>
+
+int
+main (void)
+{
+  std::string header;
+  return 0;
+}
-- 
cgit v1.1