These warnings have not been fixed because the are legitimate and/or I don't know how to fix them:
test\googletest\googletest\include\gtest/gtest-printers.h(888,43): warning C4996: 'std::tr1': warning STL4002: The non-Standard std::tr1 namespace and TR1-only machinery are deprecated and will be REMOVED.
lib\serializer\JsonSerializeFormat.h(523,26): warning C4244: 'argument': conversion from 'type1' to 'type2', possible loss of data
include\boost/iostreams/positioning.hpp(96,15): warning C4996: 'std::fpos<_Mbstatet>::seekpos': warning STL4019: The member std::fpos::seekpos() is non-Standard, ...
source\lib\filesystem\FileStream.h(39,69): warning C4910: 'boost::iostreams::stream<FileBuf,std::char_traits<char>,std::allocator<char>>': '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation
include\boost/optional/optional.hpp(274,53): warning C4244: 'argument': conversion from 'T' to 'T', possible loss of data
client\widgets\../gui/SDL_Extensions.h(112,14): warning C4244: 'initializing': conversion from 'type1' to 'type2', possible loss of data
client\CServerHandler.cpp(421,24): warning C4834: discarding return value of function with 'nodiscard' attribute (see https://bugs.vcmi.eu/view.php?id=3144)
client\CVideoHandler.cpp(130,25): warning C4996: 'AVStream::codec': was declared deprecated
Disabled the following (for MSVC only) that couldn't (or shouldn't) be fixed.
4003: not enough actual parameters for macro 'identifier'
4250: 'class1' : inherits 'class2::member' via dominance
4251: 'type' : class 'type1' needs to have dll-interface to be used by clients of class 'type2'
4275: non dll-interface class 'type1' used as base for dll-interface class 'type2'
Replaced const TBonusListPtr with TConstBonusListPtr where necessary
Replaced const std::shared_ptr<T> with std::shared_ptr<const T> where necessary.
Removed superfluous use of const.
Replaced const std::shared_ptr<T> with const std::shared_ptr<T> & in function parameters and ranged for-loops.
CPathfinder constructs boost::fibbonacci_heap handle manually using
private primitives. This stopped working with newer GCC and boost.
Replace this with proper handle_type from container's public typedef.