Build warnings since zlib-intel update

[ViktorHofer]

dotnet/corefx#32732 introduced the following warnings in master:

c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(141): warning C4267: 'function': conversion from 'size_t' to 'long', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(150): warning C4267: 'function': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(154): warning C4267: 'function': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(174): warning C4267: '-=': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(189): warning C4267: '-=': conversion from 'size_t' to 'unsigned int', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(190): warning C4267: '+=': conversion from 'size_t' to 'unsigned int', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inffast.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inffast.c(102): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inffast.c(236): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(141): warning C4267: 'function': conversion from 'size_t' to 'long', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(150): warning C4267: 'function': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(154): warning C4267: 'function': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(174): warning C4267: '-=': conversion from 'size_t' to 'uInt', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(189): warning C4267: '-=': conversion from 'size_t' to 'unsigned int', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.h(190): warning C4267: '+=': conversion from 'size_t' to 'unsigned int', possible loss of data (compiling source file C:\git\corefx\src\Native\Windows\clrcompression\zlib-intel\inflate.c) [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(719): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(878): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(946): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(949): warning C4244: '=': conversion from '__int64' to 'unsigned long', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1090): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1195): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1201): warning C4244: '=': conversion from '__int64' to 'unsigned long', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1238): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1247): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1312): warning C4244: '=': conversion from '__int64' to 'unsigned int', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(941): warning C4244: 'initializing': conversion from '__int64' to 'unsigned long', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\inflate.c(1192): warning C4244: 'initializing': conversion from '__int64' to 'unsigned long', possible loss of data [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\x86.c(49): warning C4047: 'function': 'int *' differs in levels of indirection from 'int (*)[4]' [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]
c:\git\corefx\src\native\windows\clrcompression\zlib-intel\x86.c(49): warning C4024: '__cpuid': different types for formal and actual parameter 1 [C:\git\corefx\artifacts\obj\native\netcoreapp-Windows_NT-Debug-x64-aot\clrcompression\clrcompression.vcxproj] [C:\git\corefx\src\Native\build-native.proj]

cc @stephentoub @vkvenkat

[stephentoub]

@vkvenkat is working on fixing this.

[stephentoub]

FYI, when I build locally I actually see this yielding > 110 warnings.