From 0dcf07989b4b942f6ff872023b2886b7f698d711 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 12 Dec 2014 08:02:14 +0200
Subject: Add test for lexer

g++-4.9 -std=c++14 -g -I../../.. -o driver driver.cxx ../../../build/lexer.cxx && ./driver
---
 build/lexer.cxx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'build/lexer.cxx')

diff --git a/build/lexer.cxx b/build/lexer.cxx
index 101227e..8566788 100644
--- a/build/lexer.cxx
+++ b/build/lexer.cxx
@@ -56,8 +56,10 @@ namespace build
     if (!is_eos (c))
       return c;
 
-    cerr << name_ << ':' << c.line () << ':' << c.column () << ": error: " <<
-      "unterminated escape sequence" << endl;
+    if (!name_.empty ())
+      cerr << name_ << ':' << c.line () << ':' << c.column () << ": error: " <<
+        "unterminated escape sequence" << endl;
+
     throw lexer_error ();
   }
 
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