From 1a9800bdb2224ceb778614132638513ea4a775cc Mon Sep 17 00:00:00 2001
From: Daniel Burr <dburr@dburr.net>
Date: Sun, 10 May 2020 18:25:42 +0200
Subject: [PATCH 1/2] Fix warning preventing compilation with gcc 8.2.0 when
 -Werror is enabled (due to -Werror=switch-default and -Werror=float-equal)

---
 include/yaml-cpp/emitter.h                   | 4 ++--
 include/yaml-cpp/node/detail/impl.h          | 2 ++
 include/yaml-cpp/node/detail/node_iterator.h | 6 ++++++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/include/yaml-cpp/emitter.h b/include/yaml-cpp/emitter.h
index 6f142b011..40e5d6a2b 100644
--- a/include/yaml-cpp/emitter.h
+++ b/include/yaml-cpp/emitter.h
@@ -165,10 +165,10 @@ inline Emitter& Emitter::WriteStreamable(T value) {
       special = true;
       stream << ".nan";
     } else if (std::numeric_limits<T>::has_infinity) {
-      if (value == std::numeric_limits<T>::infinity()) {
+      if (std::isinf(value) && value > 0) {
         special = true;
         stream << ".inf";
-      } else if (value == -std::numeric_limits<T>::infinity()) {
+      } else if (std::isinf(value) && value < 0) {
         special = true;
         stream << "-.inf";
       }
diff --git a/include/yaml-cpp/node/detail/impl.h b/include/yaml-cpp/node/detail/impl.h
index 46615a9f4..a776d752c 100644
--- a/include/yaml-cpp/node/detail/impl.h
+++ b/include/yaml-cpp/node/detail/impl.h
@@ -115,6 +115,7 @@ inline node* node_data::get(const Key& key,
         return pNode;
       return NULL;
     case NodeType::Scalar:
+    default:
       throw BadSubscript(key);
   }
 
@@ -143,6 +144,7 @@ inline node& node_data::get(const Key& key, shared_memory_holder pMemory) {
       convert_to_map(pMemory);
       break;
     case NodeType::Scalar:
+    default:
       throw BadSubscript(key);
   }
 
diff --git a/include/yaml-cpp/node/detail/node_iterator.h b/include/yaml-cpp/node/detail/node_iterator.h
index 088090fe7..11768f7ec 100644
--- a/include/yaml-cpp/node/detail/node_iterator.h
+++ b/include/yaml-cpp/node/detail/node_iterator.h
@@ -111,6 +111,8 @@ class node_iterator_base
         return m_seqIt == rhs.m_seqIt;
       case iterator_type::Map:
         return m_mapIt == rhs.m_mapIt;
+      default:
+        break;
     }
     return true;
   }
@@ -131,6 +133,8 @@ class node_iterator_base
         ++m_mapIt;
         m_mapIt = increment_until_defined(m_mapIt);
         break;
+      default:
+        break;
     }
     return *this;
   }
@@ -149,6 +153,8 @@ class node_iterator_base
         return value_type(**m_seqIt);
       case iterator_type::Map:
         return value_type(*m_mapIt->first, *m_mapIt->second);
+      default:
+        break;
     }
     return value_type();
   }

From 994c84160d7f1771c4a451b280f1148bfdea3975 Mon Sep 17 00:00:00 2001
From: Daniel Burr <dburr@dburr.net>
Date: Sun, 10 May 2020 18:33:15 +0200
Subject: [PATCH 2/2] Backport upstream fix

---
 include/yaml-cpp/emitter.h | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/include/yaml-cpp/emitter.h b/include/yaml-cpp/emitter.h
index 40e5d6a2b..2add9ee07 100644
--- a/include/yaml-cpp/emitter.h
+++ b/include/yaml-cpp/emitter.h
@@ -164,13 +164,12 @@ inline Emitter& Emitter::WriteStreamable(T value) {
         std::isnan(value)) {
       special = true;
       stream << ".nan";
-    } else if (std::numeric_limits<T>::has_infinity) {
-      if (std::isinf(value) && value > 0) {
-        special = true;
-        stream << ".inf";
-      } else if (std::isinf(value) && value < 0) {
-        special = true;
+    } else if (std::numeric_limits<T>::has_infinity && std::isinf(value)) {
+      special = true;
+      if (std::signbit(value)) {
         stream << "-.inf";
+      } else {
+        stream << ".inf";
       }
     }
   }