Crash with bars-per-line-engraver as of LSR snippet id=838

[Michael Gerdau]

Hi list,

I'm playing with the bars-per-line-engraver as of LSR
http://lsr.di.unimi.it/LSR/Item?id=838

When I increase the number of bars in my piece beyond a certain amount
(3500-4000 in my MWE) lilypond crashes with an access violation under linux.

I have this problem with both 2.19.83 and 2.20.0. However on 2.19.83 the
crash happens later, i.e. it can process a larger number of bars.

Before I'm reporting a bug could others please verify that I'm not doing
something stupid?

MWE is attached.

Kind regards,
Michael
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