Git Bash on Windows does not work by default with POSIX threads

[StardustGogeta]

In order to get multithreading (with <thread>) working on my Windows development environment, I needed to use the POSIX version of MinGW. However, it seems the executables that are built cannot be run by Git Bash for Windows. PowerShell and Windows CMD work fine, but Git Bash silently exits.

This can be fixed by deleting the file libstdc++-6.dll from C:\Program Files\Git\mingw64\bin, but this is inconvenient and may cause other negative effects.

[StardustGogeta]

I discovered a fix for this: Add the flag -static-libstdc++ to the g++ build command and the problem is solved.

Solved by ff511c3.