X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/fc5734fe23f35e5ce15f6b9c550115fb69113ea2..1bfb97dba532a32dbeffddd378955055b9277303:/tests/reduce.at

diff --git a/tests/reduce.at b/tests/reduce.at
index 7dc939ed..4c8da723 100644
--- a/tests/reduce.at
+++ b/tests/reduce.at
@@ -332,3 +332,24 @@ Useless rules
 ]])
 
 AT_CLEANUP
+
+
+
+## ---------------- ##
+## Empty Language.  ##
+## ---------------- ##
+
+AT_SETUP([Empty Language])
+
+AT_DATA([[input.y]],
+[[%output="input.c"
+%%
+exp: exp;
+]])
+
+AT_CHECK([[bison input.y]], 1, [],
+[[input.y: warning: 2 useless nonterminals and 2 useless rules
+input.y:3.1-3: fatal error: start symbol exp does not derive any sentence
+]])
+
+AT_CLEANUP