Making a c-style array

Hello again - after years of silence.

On Mac (Mojave - don’t ask!) I want to get the coordinates of a path for a glyph made by #/appendBezierPathWithGlyph:inFont: and #/glyphWithName:.

It seems #/elementAtIndex:associatedPoints: needs “a C-style array” and a ns:ns-mutable-array doesn’t fit the bill - and can’t be used to store ns:make-ns-point’s results anyway.

Please can somebody tell me what name I should search CCL’s sources for, what the crucial missing concept is.

Arthur