From 13b8a46e90be1bf67fef907e7b601baa64296428 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Fri, 24 Jan 2020 21:32:54 -0500
Subject: [PATCH] Fixed C++11 bulid errors

---
 peglib.h     | 16 ++++++++++------
 pl0/Makefile |  2 +-
 pl0/pl0.cc   |  2 +-
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/peglib.h b/peglib.h
index 9ea37c5..cd782a8 100644
--- a/peglib.h
+++ b/peglib.h
@@ -2530,9 +2530,11 @@ inline void DetectLeftRecursion::visit(Reference& ope) {
 }
 
 inline void HasEmptyElement::visit(Reference& ope) {
-    auto it = std::find_if(refs_.begin(), refs_.end(), [&](const auto& ref) {
-        return ope.name_ == ref.second;
-    });
+    auto it = std::find_if(refs_.begin(), refs_.end(),
+        [&](const std::pair<const char*, std::string>& ref) {
+            return ope.name_ == ref.second;
+        }
+    );
     if (it != refs_.end()) {
         return;
     }
@@ -2545,9 +2547,11 @@ inline void HasEmptyElement::visit(Reference& ope) {
 }
 
 inline void DetectInfiniteLoop::visit(Reference& ope) {
-    auto it = std::find_if(refs_.begin(), refs_.end(), [&](const auto& ref) {
-        return ope.name_ == ref.second;
-    });
+    auto it = std::find_if(refs_.begin(), refs_.end(),
+        [&](const std::pair<const char*, std::string>& ref) {
+            return ope.name_ == ref.second;
+        }
+    );
     if (it != refs_.end()) {
         return;
     }
diff --git a/pl0/Makefile b/pl0/Makefile
index 2a685ab..d319f11 100644
--- a/pl0/Makefile
+++ b/pl0/Makefile
@@ -1,2 +1,2 @@
 pl0: pl0.cc ../peglib.h
-	clang++ -std=c++14 -g -O0 pl0.cc `llvm-config --cxxflags --ldflags --system-libs --libs` -I.. -o pl0
+	clang++ -std=c++11 -g -O0 pl0.cc `llvm-config --cxxflags --ldflags --system-libs --libs` -I.. -o pl0
diff --git a/pl0/pl0.cc b/pl0/pl0.cc
index 2fb02cb..4595860 100644
--- a/pl0/pl0.cc
+++ b/pl0/pl0.cc
@@ -1,7 +1,7 @@
 //
 //  pl0.cc - PL/0 language (https://en.wikipedia.org/wiki/PL/0)
 //
-//  Copyright (c) 2018 Yuji Hirose. All rights reserved.
+//  Copyright (c) 2020 Yuji Hirose. All rights reserved.
 //  MIT License
 //