# Regression bug: Assertion error in 2.19.83

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## Regression bug: Assertion error in 2.19.83

 Hi, The following example illustrates a bug in 2.19.83 that's a regression against 2.18. Compiling with 2.19.83 gives GNU LilyPond 2.19.83 Processing `bug.ly' Parsing... Interpreting music... Preprocessing graphical objects...lilypond: /home/gub/NewGub/gub/target/linux-64/src/lilypond-git.sv.gnu.org--lilypond.git-stable-test/flower/include/interval.hh:227: T Interval_t::center() const [with T = double]: Assertion `!is_empty ()' failed. Abort (core dumped) Uncommenting the first bar gives a file that can be processed and the second bar shows a workaround that works for the piece I'm typesetting. The example compiles without problems in 2.18.2, I don't have access to 2.21, so I don't know if the bug remains there.      /Mats _______________________________________________ bug-lilypond mailing list [hidden email] https://lists.gnu.org/mailman/listinfo/bug-lilypond