Index: 0001-fs-Prevent-symlink-destroying.patch
===================================================================
--- /dev/null
+++ 0001-fs-Prevent-symlink-destroying.patch
@@ -0,0 +1,72 @@
+From 074d8425af1fe39b7315962af5a48585ac600d0e Mon Sep 17 00:00:00 2001
+From: Dmitry Chestnykh <dm.chestnykh@gmail.com>
+Date: Fri, 6 Jan 2023 20:42:15 +0300
+Subject: [PATCH] [fs] Prevent symlink destroying.
+
+If we open symlink with llvm-strip then
+the current behaviour is to destroy it and create
+new regular file. This behaviour is different from
+the behaviour of binutils strip.
+The new behaviour is to modify the real file
+and to keep symlink.
+PR#59848
+---
+ llvm/lib/Support/raw_ostream.cpp              | 19 ++++++++++++++++---
+ .../tools/llvm-objcopy/keep-dso-symlink.test  |  7 +++++++
+ 2 files changed, 23 insertions(+), 3 deletions(-)
+ create mode 100644 llvm/test/tools/llvm-objcopy/keep-dso-symlink.test
+
+diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
+index 92b15f14c62f..8cc979b33904 100644
+--- a/llvm/lib/Support/raw_ostream.cpp
++++ b/llvm/lib/Support/raw_ostream.cpp
+@@ -982,17 +982,30 @@ void buffer_ostream::anchor() {}
+ 
+ void buffer_unique_ostream::anchor() {}
+ 
+-Error llvm::writeToOutput(StringRef OutputFileName,
++Error llvm::writeToOutput(StringRef OutputCandidateFileName,
+                           std::function<Error(raw_ostream &)> Write) {
+-  if (OutputFileName == "-")
++  if (OutputCandidateFileName == "-")
+     return Write(outs());
+ 
+-  if (OutputFileName == "/dev/null") {
++  if (OutputCandidateFileName == "/dev/null") {
+     raw_null_ostream Out;
+     return Write(Out);
+   }
+ 
+   unsigned Mode = sys::fs::all_read | sys::fs::all_write | sys::fs::all_exe;
++
++  llvm::SmallString<128> RealPathOfSymlink;
++  if (sys::fs::is_symlink_file(OutputCandidateFileName)) {
++    std::error_code EC =
++        sys::fs::real_path(OutputCandidateFileName, RealPathOfSymlink);
++    if (EC)
++      return errorCodeToError(EC);
++  }
++
++  Twine OutputFileName = RealPathOfSymlink.str().empty()
++                             ? OutputCandidateFileName
++                             : Twine(RealPathOfSymlink);
++
+   Expected<sys::fs::TempFile> Temp =
+       sys::fs::TempFile::create(OutputFileName + ".temp-stream-%%%%%%", Mode);
+   if (!Temp)
+diff --git a/llvm/test/tools/llvm-objcopy/keep-dso-symlink.test b/llvm/test/tools/llvm-objcopy/keep-dso-symlink.test
+new file mode 100644
+index 000000000000..2b854cedbb00
+--- /dev/null
++++ b/llvm/test/tools/llvm-objcopy/keep-dso-symlink.test
+@@ -0,0 +1,7 @@
++# RUN: touch empty.c
++# RUN: clang empty.c -shared -o empty.so.1
++# RUN: ln -sf empty.so.1 empty.so
++# RUN: llvm-strip --strip-unneeded empty.so
++# RUN: [ -L empty.so ] && echo "Still symlink" | FileCheck %s
++
++; CHECK: Still symlink
+-- 
+2.34.1
+
Index: llvm/lib/Support/raw_ostream.cpp
===================================================================
--- llvm/lib/Support/raw_ostream.cpp
+++ llvm/lib/Support/raw_ostream.cpp
@@ -982,17 +982,30 @@
 
 void buffer_unique_ostream::anchor() {}
 
-Error llvm::writeToOutput(StringRef OutputFileName,
+Error llvm::writeToOutput(StringRef OutputCandidateFileName,
                           std::function<Error(raw_ostream &)> Write) {
-  if (OutputFileName == "-")
+  if (OutputCandidateFileName == "-")
     return Write(outs());
 
-  if (OutputFileName == "/dev/null") {
+  if (OutputCandidateFileName == "/dev/null") {
     raw_null_ostream Out;
     return Write(Out);
   }
 
   unsigned Mode = sys::fs::all_read | sys::fs::all_write | sys::fs::all_exe;
+
+  llvm::SmallString<128> RealPathOfSymlink;
+  if (sys::fs::is_symlink_file(OutputCandidateFileName)) {
+    std::error_code EC =
+        sys::fs::real_path(OutputCandidateFileName, RealPathOfSymlink);
+    if (EC)
+      return errorCodeToError(EC);
+  }
+
+  Twine OutputFileName = RealPathOfSymlink.str().empty()
+                             ? OutputCandidateFileName
+                             : Twine(RealPathOfSymlink);
+
   Expected<sys::fs::TempFile> Temp =
       sys::fs::TempFile::create(OutputFileName + ".temp-stream-%%%%%%", Mode);
   if (!Temp)
Index: llvm/test/tools/llvm-objcopy/keep-dso-symlink.test
===================================================================
--- /dev/null
+++ llvm/test/tools/llvm-objcopy/keep-dso-symlink.test
@@ -0,0 +1,8 @@
+# REQUIRES: shell
+# RUN: touch empty.c
+# RUN: clang empty.c -shared -o empty.so.1
+# RUN: ln -sf empty.so.1 empty.so
+# RUN: llvm-strip --strip-unneeded empty.so
+# RUN: [ -L empty.so ] && echo "Still symlink" | FileCheck %s
+
+; CHECK: Still symlink