The feature number doesn't apply to infinitives and present participles. Present participles to which the features number and gender apply in some contexts are recategorized as adjectives:
n=* | |||
D e s c r i p t i o n | E x a m p l e s | ||
pos=v & vf-m=inf | il veut l' aimer /n=* | ||
pos=v & vf-m=part | en aimant /n=* la vie |