This project illustrate issue with liking Boost in Debug build. In Release it's all Ok. Used environment: Windows10 + MSYS2 + MinGW64 GCC 14.2.0 Cmake 3.30.4 Boost 1.86.0 Boost installed with: ./b2 --build-type=complete toolset=gcc threading=multi link=static runtime-link=static runtime-debugging=on --prefix=d:/boost install

Difference between Debug and Release is only CMAKE flags: CMAKE_BUILD_TYPE=Debug or Release