LLVM mingw bug AddressSanitizer: use-after-poison on address

[calvin2021y]

Describe the bug when build with https://github.com/mstorsjo/llvm-mingw and CMAKE, zstd make app crash with AddressSanitizer: use-after-poison on address

To Reproduce Steps to reproduce the behavior:

1. download llvm mingw for ubuntu
2. build zstd with cmake
3. create libuv thread and use ZSTD_compress
4. app late crash with AddressSanitizer: use-after-poison on address

remove the only one function call from ZSTD_compress fix the problem.

Expected behavior expect it work without crash.

Desktop (please complete the following information):

• OS: win10
• Compiler llvm mingw clang
• Flags -O1 -g
• Build system cmake -DBUILD_SHARED_LIBS=OFF -DZSTD_BUILD_SHARED=OFF -DZSTD_MULTITHREAD_SUPPORT=OFF -DZSTD_BUILD_PROGRAMS=OFF

[calvin2021y]

remove ZSTD, or change ZSTD into lz4 both fix the problem.

[embg]

Thanks for the report! Could you share the exact code you're using to call ZSTD_compress? (You could create a GitHub Gist of that code and share that link with me).

[calvin2021y]

https://gist.github.com/calvin2021y/955910b52c46773a846dcad856a01fcd

[felixhandte]

@calvin2021y, can you share a little more about this issue? I don't see -fsanitize=address in the list of arguments you're providing to the build.