diff --git a/README.md b/README.md
index 944eb4b..607eb35 100644
--- a/README.md
+++ b/README.md
@@ -315,8 +315,8 @@ render("Hello{# Todo #}!", data); // "Hello!"
 
 Inja uses `string_view` from C++17, but includes the [polyfill](https://github.com/martinmoene/string-view-lite) from martinmoene. This way, the minimum version is C++11. Currently, the following compilers are tested:
 
-  - GCC 4.8 - 9 (and possibly later)
-  - Clang 3.5 - 9 (and possibly later)
-  - Microsoft Visual C++ 2016 - 2019 (and possibly later)
+- GCC 4.8 - 9 (and possibly later)
+- Clang 3.5 - 9 (and possibly later)
+- Microsoft Visual C++ 2016 - 2019 (and possibly later)
 
 The unit tests fail to compile with GCC 4.8 but should just work fine. A complete list of supported compiler / os versions can be found in the [CI definition](https://github.com/pantor/inja/blob/master/.github/workflows/ci.yml).
diff --git a/include/inja/exceptions.hpp b/include/inja/exceptions.hpp
index bcb8383..2cf89f6 100644
--- a/include/inja/exceptions.hpp
+++ b/include/inja/exceptions.hpp
@@ -20,7 +20,7 @@ struct InjaError : public std::runtime_error {
   SourceLocation location;
 
   explicit InjaError(const std::string &type, const std::string &message)
-      : std::runtime_error("[inja.exception." + type + "] " + message), type(type), message(message) {}
+      : std::runtime_error("[inja.exception." + type + "] " + message), type(type), message(message), location({0, 0}) {}
 
   explicit InjaError(const std::string &type, const std::string &message, SourceLocation location)
       : std::runtime_error("[inja.exception." + type + "] (at " + std::to_string(location.line) + ":" +
diff --git a/include/inja/lexer.hpp b/include/inja/lexer.hpp
index 2d3145c..0d51e42 100644
--- a/include/inja/lexer.hpp
+++ b/include/inja/lexer.hpp
@@ -37,8 +37,8 @@ class Lexer {
 
   const LexerConfig &config;
 
-  State state {State::Text};
-  MinusState minus_state {MinusState::Number};
+  State state;
+  MinusState minus_state;
   nonstd::string_view m_in;
   size_t tok_start;
   size_t pos;
@@ -268,7 +268,7 @@ class Lexer {
   }
 
 public:
-  explicit Lexer(const LexerConfig &config) : config(config) {}
+  explicit Lexer(const LexerConfig &config) : config(config), state(State::Text), minus_state(MinusState::Number) {}
 
   SourceLocation current_position() const {
     return get_source_location(m_in, tok_start);
diff --git a/include/inja/utils.hpp b/include/inja/utils.hpp
index eee804e..ee58ccc 100644
--- a/include/inja/utils.hpp
+++ b/include/inja/utils.hpp
@@ -56,7 +56,7 @@ inline SourceLocation get_source_location(nonstd::string_view content, size_t po
   size_t search_start = 0;
   while (search_start <= sliced.size()) {
     search_start = sliced.find("\n", search_start) + 1;
-    if (search_start <= 0) {
+    if (search_start == 0) {
       break;
     }
     count_lines += 1;
diff --git a/single_include/inja/inja.hpp b/single_include/inja/inja.hpp
index dbf1d99..d7aec6d 100644
--- a/single_include/inja/inja.hpp
+++ b/single_include/inja/inja.hpp
@@ -1687,7 +1687,7 @@ struct InjaError : public std::runtime_error {
   SourceLocation location;
 
   explicit InjaError(const std::string &type, const std::string &message)
-      : std::runtime_error("[inja.exception." + type + "] " + message), type(type), message(message) {}
+      : std::runtime_error("[inja.exception." + type + "] " + message), type(type), message(message), location({0, 0}) {}
 
   explicit InjaError(const std::string &type, const std::string &message, SourceLocation location)
       : std::runtime_error("[inja.exception." + type + "] (at " + std::to_string(location.line) + ":" +
@@ -1869,7 +1869,7 @@ inline SourceLocation get_source_location(nonstd::string_view content, size_t po
   size_t search_start = 0;
   while (search_start <= sliced.size()) {
     search_start = sliced.find("\n", search_start) + 1;
-    if (search_start <= 0) {
+    if (search_start == 0) {
       break;
     }
     count_lines += 1;
@@ -1910,8 +1910,8 @@ class Lexer {
 
   const LexerConfig &config;
 
-  State state {State::Text};
-  MinusState minus_state {MinusState::Number};
+  State state;
+  MinusState minus_state;
   nonstd::string_view m_in;
   size_t tok_start;
   size_t pos;
@@ -2141,7 +2141,7 @@ class Lexer {
   }
 
 public:
-  explicit Lexer(const LexerConfig &config) : config(config) {}
+  explicit Lexer(const LexerConfig &config) : config(config), state(State::Text), minus_state(MinusState::Number) {}
 
   SourceLocation current_position() const {
     return get_source_location(m_in, tok_start);