Comment #2 on issue 4180 by [email protected]: "trying to freeze in time"
from unusual time signatures
https://code.google.com/p/lilypond/issues/detail?id=4180
LilyPond uses 64-bits (acutally, 'long long int') for numerator and
denominator of rational numbers, but makes a blunder in the compare function
return r.sign_ * ::sign ((I64) (r.num_ * s.den_) - (I64) (s.num_ *
r.den_));
The example above reaches moments in time where the numerators times
denominators exceed the capacity of 64 bits. Other operations, including
subtraction, were written more carefully.
Any reasonable numbers in the time signature avoid the problem.
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