From 9e743ffa92b9f59e67714ad70e50f2c6112949bb Mon Sep 17 00:00:00 2001
From: Alex Lin <alexander.s.lin@nasa.gov>
Date: Wed, 27 Apr 2016 11:24:03 -0500
Subject: [PATCH] Invoking trick-ICG without any arguments results in a
 Segmentation fault

ICG dies on a strdup if the the input file is empty.  Added a check for
an empty input file name.  We exit with an error message if there is
no input file given.

refs #229
---
 trick_source/codegen/Interface_Code_Gen/main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/trick_source/codegen/Interface_Code_Gen/main.cpp b/trick_source/codegen/Interface_Code_Gen/main.cpp
index a4624d11..71be82e6 100644
--- a/trick_source/codegen/Interface_Code_Gen/main.cpp
+++ b/trick_source/codegen/Interface_Code_Gen/main.cpp
@@ -88,6 +88,11 @@ int main( int argc , char * argv[] ) {
         return 0 ;
     }
 
+    if ( input_file_names.empty() ) {
+        std::cerr << "No header file specified" << std::endl ;
+        return 1 ;
+    }
+
     ci.createDiagnostics();
     clang::DiagnosticOptions & diago = ci.getDiagnosticOpts() ;
     diago.ShowColors = 1 ;