3 files changed, 11 insertions, 1 deletions

diff --git a/src/tools/bnfcompile.cpp b/src/tools/bnfcompile.cpp
index 011ec84..defb16b 100644
--- a/src/tools/bnfcompile.cpp
+++ b/src/tools/bnfcompile.cpp
@@ -390,6 +390,11 @@ private:
 
 int main( int argc, char *argv[] )
 {
+        if( argc < 2 )
+        {
+                println("Provide an input filename as the first parameter.");
+                return 0;
+        }
         File fIn( argv[1], File::Read );
 
         BnfLexer bl( fIn );
diff --git a/src/tools/myriad.cpp b/src/tools/myriad.cpp
index 128f20c..30b936c 100644
--- a/src/tools/myriad.cpp
+++ b/src/tools/myriad.cpp
@@ -80,7 +80,7 @@ public:
         Bu::String sDst;
 };
 
-Bu::Formatter &operator>>( Bu::Formatter &f, Mode &e )
+Bu::Formatter &operator>>( Bu::Formatter &f, Mode & /*e*/ )
 {
         sio << "Uh oh, the formatter was called..." << sio.nl;
         return f;
diff --git a/src/tools/parser.cpp b/src/tools/parser.cpp
index aa9e3e4..7d35f12 100644
--- a/src/tools/parser.cpp
+++ b/src/tools/parser.cpp
@@ -227,6 +227,11 @@ void redPrint( Bu::Parser &p )
 
 int main( int argc, char *argv[] )
 {
+        if( argc < 2 )
+        {
+                println("Provide an input filename as the first parameter.");
+                return 0;
+        }
         File fIn( argv[1], File::Read );
 
         Parser p;