[flang-commits] [flang] [llvm] [flang-rt] Honor TMPDIR/TMP/TEMP/TEMPDIR for OPEN(STATUS='SCRATCH') (PR #199517)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- flang-rt/unittests/Runtime/ScratchTempDir.cpp flang-rt/lib/runtime/file.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/flang-rt/unittests/Runtime/ScratchTempDir.cpp b/flang-rt/unittests/Runtime/ScratchTempDir.cpp
index fc2a5c453..fbff7c348 100644
--- a/flang-rt/unittests/Runtime/ScratchTempDir.cpp
+++ b/flang-rt/unittests/Runtime/ScratchTempDir.cpp
@@ -7,7 +7,8 @@
 //===----------------------------------------------------------------------===//
 //
 // Verifies that OPEN(STATUS='SCRATCH') honors the TMPDIR/TMP/TEMP/TEMPDIR
-// environment variables on POSIX, matching llvm::sys::path::system_temp_directory.
+// environment variables on POSIX, matching
+// llvm::sys::path::system_temp_directory.
 //
 //===----------------------------------------------------------------------===//
 
@@ -118,7 +119,8 @@ TEST_F(ScratchTempDirTests, TmpConsulted) {
 TEST_F(ScratchTempDirTests, EmptyTmpdirSkipped) {
   TempDirEnvGuard guard;
   char tmpDir[]{"/tmp/flang-rt-scratch-test-XXXXXX"};
-  ASSERT_NE(::mkdtemp(tmpDir), nullptr) << "mkdtemp failed: " << strerror(errno);
+  ASSERT_NE(::mkdtemp(tmpDir), nullptr)
+      << "mkdtemp failed: " << strerror(errno);
   ::setenv("TMPDIR", "", 1);
   ::setenv("TMP", tmpDir, 1);
   EXPECT_EQ(OpenScratchUnit(), IostatOk)
@@ -133,7 +135,8 @@ TEST_F(ScratchTempDirTests, EmptyTmpdirSkipped) {
 TEST_F(ScratchTempDirTests, FileCreatedInTmpdir) {
   TempDirEnvGuard guard;
   char tmpDir[]{"/tmp/flang-rt-scratch-test-XXXXXX"};
-  ASSERT_NE(::mkdtemp(tmpDir), nullptr) << "mkdtemp failed: " << strerror(errno);
+  ASSERT_NE(::mkdtemp(tmpDir), nullptr)
+      << "mkdtemp failed: " << strerror(errno);
   ::setenv("TMPDIR", tmpDir, 1);
 
   struct stat before{};

``````````

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https://github.com/llvm/llvm-project/pull/199517