I seem to have managed to create a Lilypond file that crashes my
system (Linux Mint 64-Bit with kernel 4.4.0-98-generic) so hard that I
have to shut it down using the power button. Even a bash script in
background that kills the Lilypond process every few seconds cannot
rescue reliably. :-( The system hangs while "Drawing systems"
("Systeme erstellen" on my pc).
That sounds like exploding memory usage. Try using the ulimit command
for limiting the memory usage per process to something quite lower than
your physical memory and have some swap space available so that dormant
processes can be temporarily moved out, not contributing to the memory
pressure that much.
Thanks for pointing me to ulimit. This enabled me to safely strip down
the example to a minimal one. With ulimit -Sv 5000000, Lilypond thinks
for a while during "drawing systems" and then aborts with a std::bad_alloc.)
This kind-of-minimal version crashes 2.19.80 as well as current master:
\version "2.19.80"
\new Staff <<
{
\clef bass
e,4
}
{
\omit NoteHead
e,4
}
>>
Everything here (except the \version) seems to be necessary. I can
reproduce the crash with some other configurations as well (another
pitch in tenor clef, for instance), but removing any single command
seems to resolve the problem. Also, putting each "voice" into a regular
\new Voice (as in Harm's proposal) makes the problem disappear. Just as
taking f, instead of e, for the pitch does (which could point to ledger
lines).
Best
Lukas
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