From 0bf2a43aad594673e5994dba5a894be623d91690 Mon Sep 17 00:00:00 2001
From: Mark Spruiell <mes@zeroc.com>
Date: Thu, 13 Apr 2017 12:32:35 -0700
Subject: Preprocessor fix

---
 cpp/src/Slice/Preprocessor.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'cpp/src/Slice/Preprocessor.cpp')

diff --git a/cpp/src/Slice/Preprocessor.cpp b/cpp/src/Slice/Preprocessor.cpp
index 9ed4eee10ab..e275bcd3024 100644
--- a/cpp/src/Slice/Preprocessor.cpp
+++ b/cpp/src/Slice/Preprocessor.cpp
@@ -173,7 +173,10 @@ FILE*
 Slice::Preprocessor::preprocess(bool keepComments, const string& extraArg)
 {
     vector<string> args;
-    args.push_back(extraArg);
+    if(!extraArg.empty())
+    {
+        args.push_back(extraArg);
+    }
     return preprocess(keepComments, args);
 }
 
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