From 66a019967695807ee37b80c3b0fca7b9d09bff26 Mon Sep 17 00:00:00 2001
From: Jason Li <jasonlizhengjian@gmail.com>
Date: Tue, 2 Jul 2024 16:31:50 -0400
Subject: [PATCH] [SYCL][ClangLinkerWrapper] Make all temp files use different
 names (#14243)

Resolve issue with -save-temps regarding a temp file being linked to
itself.

---------

Co-authored-by: Marcos Maronas <maarquitos14@users.noreply.github.com>
---
 clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
index 158e3978e70e7..e24b1c034275f 100644
--- a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -211,7 +211,9 @@ Expected<StringRef> createOutputFile(const Twine &Prefix, StringRef Extension) {
   std::scoped_lock<decltype(TempFilesMutex)> Lock(TempFilesMutex);
   SmallString<128> OutputFile;
   if (SaveTemps) {
-    (Prefix + "." + Extension).toNullTerminatedStringRef(OutputFile);
+    // Generate a unique path name without creating a file
+    sys::fs::createUniquePath(Prefix + "-%%%%%%." + Extension, OutputFile,
+                              /*MakeAbsolute=*/false);
   } else {
     if (std::error_code EC =
             sys::fs::createTemporaryFile(Prefix, Extension, OutputFile))