diff --git a/include/fast_float/ascii_number.h b/include/fast_float/ascii_number.h
index d476ecb..0f69458 100644
--- a/include/fast_float/ascii_number.h
+++ b/include/fast_float/ascii_number.h
@@ -473,15 +473,16 @@ enum class parse_error : uint_fast8_t {
 };
 
 template <typename UC> struct parsed_number_string_t {
+  FASTFLOAT_NO_UNIQUE_ADDRESS UC const *lastmatch;
   FASTFLOAT_NO_UNIQUE_ADDRESS am_mant_t mantissa;
   FASTFLOAT_NO_UNIQUE_ADDRESS am_pow_t exponent;
-  FASTFLOAT_NO_UNIQUE_ADDRESS UC const *lastmatch;
+
+  FASTFLOAT_NO_UNIQUE_ADDRESS parse_error error;
 #ifndef FASTFLOAT_ONLY_POSITIVE_C_NUMBER_WO_INF_NAN
   FASTFLOAT_NO_UNIQUE_ADDRESS bool negative;
 #endif
   FASTFLOAT_NO_UNIQUE_ADDRESS bool invalid;
   FASTFLOAT_NO_UNIQUE_ADDRESS bool too_many_digits;
-  FASTFLOAT_NO_UNIQUE_ADDRESS parse_error error;
 
   // contains the range of the significant digits
   FASTFLOAT_NO_UNIQUE_ADDRESS span<UC const> integer;  // non-nullable
diff --git a/include/fast_float/float_common.h b/include/fast_float/float_common.h
index 460543d..c4146ff 100644
--- a/include/fast_float/float_common.h
+++ b/include/fast_float/float_common.h
@@ -89,8 +89,8 @@ enum class chars_format : chars_format_t {
 };
 
 template <typename UC> struct from_chars_result_t {
-  UC const *ptr;
-  std::errc ec;
+  FASTFLOAT_NO_UNIQUE_ADDRESS UC const *ptr;
+  FASTFLOAT_NO_UNIQUE_ADDRESS std::errc ec;
 
   // https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2497r0.html
   constexpr explicit operator bool() const noexcept {
@@ -495,8 +495,8 @@ fastfloat_strncasecmp(UC const *actual_mixedcase, UC const *expected_lowercase,
 
 // a pointer and a length to a contiguous block of memory
 template <typename T> struct span {
-  T const *ptr;
-  am_digits length;
+  FASTFLOAT_NO_UNIQUE_ADDRESS T const *ptr;
+  FASTFLOAT_NO_UNIQUE_ADDRESS am_digits length;
 
   constexpr span(T const *_ptr, am_digits _length) noexcept
       : ptr(_ptr), length(_length) {}