From 7ddb421ced30ca80c4e7b7442728573a0703dc2a Mon Sep 17 00:00:00 2001
From: greg <greg.shuflin@protonmail.com>
Date: Mon, 9 Jan 2017 22:56:29 -0800
Subject: [PATCH] Exit cleanly on opt parse fail

---
 src/main.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index be74b6c..c8fab32 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -23,7 +23,13 @@ mod llvm_wrap;
 
 fn main() {
     let option_matches =
-        program_options().parse(std::env::args()).expect("Could not parse options");
+        match program_options().parse(std::env::args()) {
+            Ok(o) => o,
+            Err(e) => {
+                println!("{:?}", e);
+                std::process::exit(1);
+            }
+        };
     let trace = option_matches.opt_present("t");
     match option_matches.free[..] {
         [] | [_] => {