compile warnings with -Wconversion enabled

Compiling with g++ version 9.3 on ubuntu 20.04
with -Wconversion warning enabled
we get compiler warnings when #including any of the following files:

boost/crc.hpp
boost/date_time/microsec_time_clock.hpp
boost/date_time/wrapping_int.hpp
boost/optional/optional.hpp
boost/throw_exception.hpp
boost/token_functions.hpp
boost/tuple/tuple.hpp
boost/type_traits/is_complete.hpp
boost/uuid/string_generator.hpp

I'm using BOOST version 1.77.0
but the problem is present with older versions too

Example: file main.cc

#include

int main()
{
return 0;
}

Then compile with:
g++ -std=c++17 -Wconversion -g -IpathToBoostIncludes main.cc

Then we get the following warnings:

In file included from include/boost/array.hpp:50,
from include/boost/crc.hpp:39,
from main.cc:4:
include/boost/throw_exception.hpp:54:36: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
54 | template( static_cast< E* >( 0 ) ) ) > struct wrapexcept_add_base;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/boost/throw_exception.hpp:54:36: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
In file included from main.cc:4:
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:73:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
73 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly = 0u,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:74:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
74 | BOOST_CRC_PARM_TYPE InitRem = 0u,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:75:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
75 | BOOST_CRC_PARM_TYPE FinalXor = 0u, bool ReflectIn = false,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:80:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
80 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:81:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
81 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:81:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
81 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:83:25: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
83 | typename uint_t::fast crc( void const *buffer,
| ^
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:87:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
87 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly >
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:88:25: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
88 | typename uint_t::fast augmented_crc( void const *buffer,
| ^
include/boost/crc.hpp:90:26: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
90 | typename uint_t::fast initial_remainder = 0u);
| ^
include/boost/crc.hpp:155:40: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
155 | typedef typename boost::uint_t::fast value_type;
| ^
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:241:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
241 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:242:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
242 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:242:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
242 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:249:40: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
249 | typedef typename boost::uint_t::fast value_type;
| ^
include/boost/crc.hpp:308:55: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
308 | typedef detail::possible_reflector reflect_i_type;
| ^
include/boost/crc.hpp:309:58: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
309 | typedef detail::crc_driver crc_table_type;
| ^
include/boost/crc.hpp:310:69: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
310 | typedef detail::possible_reflector
| ^
include/boost/crc.hpp: In function 'unsigned char boost::detail::reflect_sub_byte(unsigned char, int)':
include/boost/crc.hpp:456:30: warning: conversion from 'int' to 'unsigned char' may change value [-Wconversion]
456 | { return reflect_byte(x) >> (CHAR_BIT - word_length); }
| ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp: In member function 'boost::crc_basic::value_type boost::crc_basic::get_interim_remainder() const':
include/boost/crc.hpp:1679:52: warning: conversion from 'std::size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
1679 | return rem_ & detail::low_bits_mask_c::value;
| ^
include/boost/crc.hpp: In member function 'boost::crc_basic::value_type boost::crc_basic::checksum() const':
include/boost/crc.hpp:1896:58: warning: conversion from 'std::size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
1896 | rem_) ^ final_ ) & detail::low_bits_mask_c::value;
| ^
include/boost/crc.hpp: At global scope:
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1922:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1922 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1923:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1923 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1923:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1923 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1935:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1935 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1936:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1936 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1936:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1936 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1948:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1948 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1949:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1949 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1949:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1949 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1961:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1961 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1962:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1962 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1962:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1962 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1974:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1974 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1975:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1975 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1975:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1975 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1987:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1987 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1988:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1988 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:1988:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
1988 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2000:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2000 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2001:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2001 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2001:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2001 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp: In member function 'boost::crc_optimal::value_type boost::crc_optimal::get_interim_remainder() const':
include/boost/crc.hpp:2011:39: warning: conversion from 'std::size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
2011 | detail::low_bits_mask_c::value;
| ^
include/boost/crc.hpp: At global scope:
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2028:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2028 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2029:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2029 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2029:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2029 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2047:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2047 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2048:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2048 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2048:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2048 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2066:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2066 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2067:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2067 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2067:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2067 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2087:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2087 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2088:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2088 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2088:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2088 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2103:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2103 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2104:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2104 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2104:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2104 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp: In member function 'boost::crc_optimal::value_type boost::crc_optimal::checksum() const':
include/boost/crc.hpp:2113:41: warning: conversion from 'std::size_t' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
2113 | & detail::low_bits_mask_c::value;
| ^
include/boost/crc.hpp: At global scope:
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2135:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2135 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2136:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2136 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2136:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2136 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2164:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2164 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2165:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2165 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2165:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2165 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2216:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2216 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2217:12: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2217 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2217:41: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2217 | BOOST_CRC_PARM_TYPE InitRem, BOOST_CRC_PARM_TYPE FinalXor,
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:2220:21: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
2220 | typename uint_t::fast
| ^
include/boost/crc.hpp:57:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
57 | #define BOOST_CRC_PARM_TYPE typename ::boost::uint_t::fast
| ^
include/boost/crc.hpp:2281:30: note: in expansion of macro 'BOOST_CRC_PARM_TYPE'
2281 | template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly >
| ^~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:2282:21: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
2282 | typename uint_t::fast
| ^
include/boost/crc.hpp:2287:25: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
2287 | typename uint_t::fast initial_remainder // = 0u
| ^
include/boost/crc.hpp: In function 'typename boost::uint_t::fast boost::augmented_crc(const void*, std::size_t, typename boost::uint_t::fast)':
include/boost/crc.hpp:2290:40: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
2290 | return detail::low_bits_mask_c::value &
| ^
include/boost/crc.hpp:2291:59: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
2291 | detail::byte_table_driven_crcs::
| ^
include/boost/crc.hpp: In instantiation of 'Unsigned boost::detail::reflect_unsigned(Unsigned, int) [with Unsigned = unsigned char]':
include/boost/crc.hpp:415:47: required from here
include/boost/crc.hpp:387:39: warning: conversion from 'int' to 'unsigned char' may change value [-Wconversion]
387 | for ( Unsigned l = 1u, h = l << (word_length - 1) ; h > l ; h >>= 1, l
| ~~^~~~~~~~~~~~~~~~~~~~
include/boost/crc.hpp:387:72: warning: conversion from 'int' to 'unsigned char' may change value [-Wconversion]
387 | for ( Unsigned l = 1u, h = l << (word_length - 1) ; h > l ; h >>= 1, l
| ~~^~~~~
include/boost/crc.hpp:388:10: warning: conversion from 'int' to 'unsigned char' may change value [-Wconversion]
387 | for ( Unsigned l = 1u, h = l << (word_length - 1) ; h > l ; h >>= 1, l
| ~
388 | <<= 1 )
| ^~~~~