Compile error：unreachable code

[mi2think]

I got wired complile error with VS2022, any solutions?

1>I:\vcpkg\installed\x64-windows-static\include\xxhash.h(3169): error C2220: the following warning is treated as an error
1>I:\vcpkg\installed\x64-windows-static\include\xxhash.h(3169): warning C4702: unreachable code

3169 line is h32 = XXH32_mergeAccs(acc); in function XXH32_endian_align

Anyone has same error?

[t-mat]

Hi @mi2think,

We need further details of your issue/project. Could you provide how to reproduce your issue?

---

It seems you're using vcpkg. At least in my environment, I don't hit any issue with genuine VS2022 + MSVC + xxhash from vcpkg.
Please check the following project and command:

• Open new terminal with : Windows Start Button > Developer Command Prompt for VS 2022.
• Input the following commands in the developer command prompt:

cd /d "%PUBLIC%"
mkdir xxhash-issue-1038
cd    xxhash-issue-1038
curl.exe -JOL https://github.com/user-attachments/files/20390302/xxhash-issue-1038-msvc-project.zip
tar.exe xvf xxhash-issue-1038-msvc-project.zip
msbuild.exe .\xxhash-issue-1038.sln /p:Configuration="Release" /p:Platform="x64"
.\x64\Release\xxhash-issue-1038.exe

msbuild doesn't report any error. And the output is:

XXH_versionNumber=803

xxhash-issue-1038-msvc-project.zip

[mi2think]

Thanks for your replay. After done as you saied, it output 0 errors & 0 warnings, and XXH_versionNumber=803. So it's a wired error.

I'm compiling zen server project . In linking stage, detail error as below:

------ Build started: Project: zenserver, Configuration: release x64 ------
$xmake config -y  -P . -p windows -m release -a x64 -o "build"
$xmake build -y  -P .  "zenserver"
[ 99%]: linking.release zenserver.exe
EXEC : error : LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Generating code
I:\vcpkg\installed\x64-windows-static\include\xxhash.h(3169): error C2220: the following warning is treated as an error
I:\vcpkg\installed\x64-windows-static\include\xxhash.h(3169): warning C4702: unreachable code
LINK : fatal error LNK1257: code generation failed

VS2022 version is : 17.14.1 and after switch to 17.8.21 same error.