[libcxx-commits] [libcxx] [libcxx] Add fallback to standard C when `unistd` is unavailable (PR #102005)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff 9fea73110ecc0a13d18e5c52f8e7fa62a9de9ee9 e4408fcaf74aff96b076c932611d2ba3a18fdeab --extensions h -- libcxx/test/support/platform_support.h
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/test/support/platform_support.h b/libcxx/test/support/platform_support.h
index b19e9a73c6..ab6a5414c0 100644
--- a/libcxx/test/support/platform_support.h
+++ b/libcxx/test/support/platform_support.h
@@ -42,9 +42,9 @@
 #   include <fcntl.h> // _O_EXCL, ...
 #   include <sys/stat.h> // _S_IREAD, ...
 #elif __has_include(<unistd.h>)
-#   include <unistd.h> // close
+#  include <unistd.h> // close
 #else
-#   define TEST_TEMP_FALLBACK
+#  define TEST_TEMP_FALLBACK
 #endif
 
 #if defined(_CS_GNU_LIBC_VERSION)
@@ -75,15 +75,15 @@ std::string get_temp_file_name()
         abort();
     }
 #elif defined(TEST_TEMP_FALLBACK)
-    char *filename = tmpnam(nullptr);
-    if (!filename)
-      abort();
-    FILE *file = fopen(filename, "w");
-    if (!file)
-      abort();
-    if (fclose(file) == EOF)
-      abort();
-    return std::string(filename);
+  char* filename = tmpnam(nullptr);
+  if (!filename)
+    abort();
+  FILE* file = fopen(filename, "w");
+  if (!file)
+    abort();
+  if (fclose(file) == EOF)
+    abort();
+  return std::string(filename);
 #else
     std::string Name = "libcxx.XXXXXX";
     int FD = mkstemp(&Name[0]);

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https://github.com/llvm/llvm-project/pull/102005