math.floats.env.x86: more direct test for stack fault detection
math.floats.env.x86: more direct test for stack fault detection

erg/factor,erg/factor,erg/factor,mcandre/factor,erg/factor,mcandre/factor,mcandre/factor,kingcons/factor,mcandre/factor,erg/factor,kingcons/factor,erg/factor,kingcons/factor,mcandre/factor,erg/factor,mcandre/factor,kingcons/factor,mcandre/factor