After updating to a current test build, attempting to run ioquake3.x86.exe fails, with the error
The program can’t start because libgcc_s_sjlj-1.dll is missing from your computer. Try reinstalling the program to fix this problem.
Reinstalling didn’t fix the problem, the DLL isn’t in the old installers either. Switching to the x86_64 builds is not currently an option - I’m trying to entertain myself on a rather old computer while that’s all I have.