1 files changed, 5 insertions, 0 deletions
diff --git a/testcases b/testcases
index 04e2971..04e90dd 100644
--- a/testcases
+++ b/testcases
@@ -111,3 +111,8 @@ gawk
 20:
 ./cppawk 'BEGIN { print __posix__ }'
 :
+--
+21:
+./cppawk --prepro-only 'BEGIN { }' | grep BEGIN
+:
+BEGIN { }