Frontend: Default to creating output files using temporary files + rename.
- This is a more reliable default, as it behaves better on failure and also
ensures that we create *new* files (instead of reusing existing inodes). This
is useful for other applications (like lldb) which want to cache inode's to
know when a file has been rewritten.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151961 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Frontend/CompilerInstance.h b/include/clang/Frontend/CompilerInstance.h
index 4ee90df..ff0c309 100644
--- a/include/clang/Frontend/CompilerInstance.h
+++ b/include/clang/Frontend/CompilerInstance.h
@@ -572,6 +572,10 @@
/// Create the default output file (from the invocation's options) and add it
/// to the list of tracked output files.
///
+ /// The files created by this function always use temporary files to write to
+ /// their result (that is, the data is written to a temporary file which will
+ /// atomically replace the target output on success).
+ ///
/// \return - Null on error.
llvm::raw_fd_ostream *
createDefaultOutputFile(bool Binary = true, StringRef BaseInput = "",
diff --git a/lib/Frontend/CompilerInstance.cpp b/lib/Frontend/CompilerInstance.cpp
index a785511..bf3e3a8 100644
--- a/lib/Frontend/CompilerInstance.cpp
+++ b/lib/Frontend/CompilerInstance.cpp
@@ -470,7 +470,8 @@
StringRef InFile,
StringRef Extension) {
return createOutputFile(getFrontendOpts().OutputFile, Binary,
- /*RemoveFileOnSignal=*/true, InFile, Extension);
+ /*RemoveFileOnSignal=*/true, InFile, Extension,
+ /*UseTemporary=*/true);
}
llvm::raw_fd_ostream *