Vendor import of llvm release_30 branch r142614:

http://llvm.org/svn/llvm-project/llvm/branches/release_30@142614

1 files changed, 32 insertions, 4 deletions

diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index 896c94c..bebe442 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -490,6 +490,36 @@ bool is_separator(char value) {
   }
 }
 
+void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
+  result.clear();
+  
+  // Check whether the temporary directory is specified by an environment
+  // variable.
+  const char *EnvironmentVariable;
+#ifdef LLVM_ON_WIN32
+  EnvironmentVariable = "TEMP";
+#else
+  EnvironmentVariable = "TMPDIR";
+#endif
+  if (char *RequestedDir = getenv(EnvironmentVariable)) {
+    result.append(RequestedDir, RequestedDir + strlen(RequestedDir));
+    return;
+  }
+    
+  // Fall back to a system default.
+  const char *DefaultResult;
+#ifdef LLVM_ON_WIN32
+  (void)erasedOnReboot;
+  DefaultResult = "C:\\TEMP";
+#else
+  if (erasedOnReboot)
+    DefaultResult = "/tmp";
+  else
+    DefaultResult = "/var/tmp";
+#endif
+  result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
+}
+  
 bool has_root_name(const Twine &path) {
   SmallString<128> path_storage;
   StringRef p = path.toStringRef(path_storage);
@@ -626,7 +656,7 @@ error_code create_directories(const Twine &path, bool &existed) {
   if (error_code ec = fs::exists(parent, parent_exists)) return ec;
 
   if (!parent_exists)
-    return create_directories(parent, existed);
+    if (error_code ec = create_directories(parent, existed)) return ec;
 
   return create_directory(p, existed);
 }
@@ -682,14 +712,12 @@ bool is_other(file_status status) {
          !is_symlink(status);
 }
 
-void directory_entry::replace_filename(const Twine &filename, file_status st,
-                                       file_status symlink_st) {
+void directory_entry::replace_filename(const Twine &filename, file_status st) {
   SmallString<128> path(Path.begin(), Path.end());
   path::remove_filename(path);
   path::append(path, filename);
   Path = path.str();
   Status = st;
-  SymlinkStatus = symlink_st;
 }
 
 error_code has_magic(const Twine &path, const Twine &magic, bool &result) {