Additional flag to ignore

Author: mborland

include/boost/decimal/charconv.hpp

@@ -591,6 +591,7 @@ BOOST_DECIMAL_CONSTEXPR auto to_chars_fixed_impl(char* first, char* last, const
                     #if defined(__GNUC__) && __GNUC__ >= 12
                     #pragma GCC diagnostic push
                     #pragma GCC diagnostic ignored "-Warray-bounds"
+                    #pragma GCC diagnostic ignored "-Wstringop-overflow"
                     #endif
 
                     // We have already done the check to make sure that casting this to size_t does not cause