1 files changed, 9 insertions, 0 deletions
diff --git a/cpp/src/IceUtil/OutputUtil.cpp b/cpp/src/IceUtil/OutputUtil.cpp
index 9b8612c4d7b..5a398c84ce6 100644
--- a/cpp/src/IceUtil/OutputUtil.cpp
+++ b/cpp/src/IceUtil/OutputUtil.cpp
@@ -90,6 +90,15 @@ IceUtilInternal::OutputBase::~OutputBase()
 void
 IceUtilInternal::OutputBase::open(const char* s)
 {
+    //
+    // Remove any existing file first. This prevents file name
+    // mismatches on case-insensitive OSs.
+    //
+#ifdef _WIN32
+    _unlink(s);
+#else
+    unlink(s);
+#endif
     _fout.open(s);
 }