From d585f094236de21b80c7f27e8d0e71995479754e Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Tue, 3 Oct 2017 10:05:46 -0700
Subject: [PATCH] Don't silently swallow lexer errors.

---
 lib/reader/src/parser.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/reader/src/parser.rs b/lib/reader/src/parser.rs
index be86302645..e334319e91 100644
--- a/lib/reader/src/parser.rs
+++ b/lib/reader/src/parser.rs
@@ -807,6 +807,11 @@ impl<'a> Parser<'a> {
         while self.token().is_some() {
             list.push(self.parse_function(unique_isa)?);
         }
+        if let Some(err) = self.lex_error {
+            return match err {
+                lexer::Error::InvalidChar => err!(self.loc, "invalid character"),
+            };
+        }
         Ok(list)
     }