maxima 5.42.2 built with ecl 20.4.24 on 64-bit cygwin produces errors and crashes
ECL 20.4.24 (patched as on https://trac.sagemath.org/ticket/22191) builds Maxima 5.42.2 on Cygwin (64 bit) just fine, but running Maxima produces a number of crashes/errors errors. E.g.
diff(bessel_y(v,w),w);produces a crash
1.047197551196598*%i-1.110223024625157e-16(the real part should be 0)
sin the range
[0..99]produces a crash