diff --git a/include/rexy/detail/format/formatter.tpp b/include/rexy/detail/format/formatter.tpp
index 81ac421..94dd735 100644
--- a/include/rexy/detail/format/formatter.tpp
+++ b/include/rexy/detail/format/formatter.tpp
@@ -30,7 +30,7 @@
 #include "parse.hpp"
 #include "utf_iterator.hpp"
 
-#include "../../utility.hpp" //abs
+#include "../../utility.hpp" //abs, memcpy
 
 #include <type_traits> //remove_cvref
 #include <utility> //forward, move
@@ -537,7 +537,14 @@ namespace rexy::fmt::detail{
 				break;
 			};
 
-			if(manual_precision){
+			//manually handle nan and inf since some compilers (msvc) output something other than the desired values in 'to_chars'
+			if(is_nan){
+				result.ptr = buffstart + 3;
+				rexy::memcpy(buffstart, "nan", 3);
+			}else if(is_infinity){
+				result.ptr = buffstart + 3;
+				rexy::memcpy(buffstart, "inf", 3);
+			}else if(manual_precision){
 				const int precision = supplied_precision ? specs.precision : 6;
 				result = std::to_chars(buffstart, buffend, f, fmt, precision);
 			}else{
diff --git a/include/rexy/detail/format/output_buffer.hpp b/include/rexy/detail/format/output_buffer.hpp
index 40eb2c2..ddd2549 100644
--- a/include/rexy/detail/format/output_buffer.hpp
+++ b/include/rexy/detail/format/output_buffer.hpp
@@ -114,6 +114,7 @@ namespace rexy::fmt::detail{
 			if(written != this->m_size){
 				REXY_THROW_FORMAT_ERROR("Failed to print data");
 			}
+			return written;
 		}
 	};
 
diff --git a/include/rexy/detail/format/parse.tpp b/include/rexy/detail/format/parse.tpp
index b6b4b49..b1ba079 100644
--- a/include/rexy/detail/format/parse.tpp
+++ b/include/rexy/detail/format/parse.tpp
@@ -80,8 +80,8 @@ namespace rexy::fmt::detail::parse{
 			return static_cast<long long>(t);
 		}else{
 			REXY_THROW_FORMAT_ERROR("Invalid dynamic specifier");
-			return static_cast<long long>(0);
 		}
+		return {};
 	}
 	template<class Specs>
 	constexpr decltype(auto) dynamic_width_adapter<Specs>::operator()(void){
@@ -182,7 +182,6 @@ namespace rexy::fmt::detail::parse{
 				}
 			}
 			return last;
-			REXY_THROW_FORMAT_ERROR("Invalid index spec");
 		}
 		for(auto it = start+1;it != last;++it){
 			if(!is_a_number(*it)){