From 2d276c8cd9a64800587172b40b8cb74e273a4f88 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Tue, 9 Jul 2019 21:49:15 -0400
Subject: [PATCH] Fix #63

---
 peglib.h     |  3 +++
 test/test.cc | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/peglib.h b/peglib.h
index 27f4574..1bc1217 100644
--- a/peglib.h
+++ b/peglib.h
@@ -2374,6 +2374,9 @@ inline void DetectLeftRecursion::visit(Reference& ope) {
         refs_.insert(ope.name_);
         if (ope.rule_) {
             ope.rule_->accept(*this);
+            if (done_ == false) {
+                return;
+            }
         }
     }
     done_ = true;
diff --git a/test/test.cc b/test/test.cc
index 6f381c0..ac2c7af 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -1032,6 +1032,17 @@ TEST_CASE("Left recursive with zom test", "[left recursive]")
     REQUIRE(!parser);
 }
 
+TEST_CASE("Left recursive with a ZOM content rule", "[left recursive]")
+{
+    parser parser(R"(
+        A <- B
+        B <- _ A
+        _ <- ' '* # Zero or more
+    )");
+
+    REQUIRE(!parser);
+}
+
 TEST_CASE("Left recursive with empty string test", "[left recursive]")
 {
     parser parser(