Duh.
~~~
#0 Grob::internal_get_property(scm_unused_struct*) const (this=this@entry=0x0,
sym=0x7fffe98e1ea0) at grob-property.cc:162
#1 0x0000000000595190 in Staff_symbol::line_positions(Grob*) (me=0x0) at
staff-symbol.cc:113
#2 0x00000000005335d7 in Multi_measure_rest::church_rest(Grob*, Font_metric*,
int, int, double) (me=me@entry=0xbaa270, musfont=musfont@entry=0xba0850,
measure_count=measure_count@entry=1, mdl=<optimized out>, space=space@entry=0)
at multi-measure-rest.cc:268
#3 0x0000000000533f65 in Multi_measure_rest::symbol_stencil(Grob*, double)
(me=me@entry=0xbaa270, space=space@entry=0) at multi-measure-rest.cc:216
#4 0x000000000053487a in
Multi_measure_rest::set_spacing_rods(scm_unused_struct*) (smob=<optimized out>)
at multi-measure-rest.cc:417
#5 0x00007ffff7dc1044 in scm_dapply (proc=0x7fffea23aa30, arg1=0x7fffe64ca090,
args=0x404) at eval.c:4895
#6 0x000000000065944c in Grob::try_callback_on_alist(scm_unused_struct**,
scm_unused_struct*, scm_unused_struct*) (this=this@entry=0xbaa270,
alist=alist@entry=0xbaa2f8, sym=0x7fffe98d1760, proc=0x7fffea23aa30) at
/home/work/lilypond/lily/include/smobs.hh:318
#7 0x000000000065967c in Grob::internal_get_property(scm_unused_struct*) const
(this=this@entry=0xbaa270, sym=<optimized out>) at grob-property.cc:184
#8 0x00000000005f8b53 in System::pre_processing() (this=0xba05d0) at
system.cc:552
#9 0x00000000006b4bf0 in ly_format_output(scm_unused_struct*)
(context=context@entry=0x7fffe6529860) at global-context-scheme.cc:45
#10 0x000000000045adc7 in Score::book_rendering(Output_def*, Output_def*)
(this=this@entry=0xb76390, layoutbook=0xb76d70,
default_def=default_def@entry=0xb75750) at score.cc:141
#11 0x00000000006dbf38 in Book::process_score(scm_unused_struct*, Paper_book*,
Output_def*) (this=this@entry=0xb76cf0, s=s@entry=0x7fffe6560b90,
output_paper_book=output_paper_book@entry=0xb768f0,
layout=layout@entry=0xb75750) at book.cc:222
#12 0x00000000006dc7c8 in Book::process(Output_def*, Output_def*, Paper_book*)
(this=this@entry=0xb76cf0, default_paper=<optimized out>,
default_layout=0xb75750, parent_part=parent_part@entry=0x0) at book.cc:305
#13 0x00000000006dc827 in Book::process(Output_def*, Output_def*)
(this=this@entry=0xb76cf0, default_paper=<optimized out>,
default_layout=<optimized out>) at book.cc:194
#14 0x00000000005c9081 in ly_book_process(scm_unused_struct*,
scm_unused_struct*, scm_unused_struct*, scm_unused_struct*)
(book_smob=<optimized out>, default_paper=0x7fffe6882220,
default_layout=0x7fffe66cba10, output=0x7fffe9556f00)
at /home/work/lilypond/lily/include/smobs.hh:179
#15 0x00007ffff7dc11a0 in scm_dapply (proc=0x7fffe99104f0, arg1=0x7fffea2a8ae0,
args=0x7fffe65a1f80, args@entry=0x404) at eval.c:4930
#16 0x00007ffff7dc3d41 in deval (x=<optimized out>, env=<optimized out>) at
eval.c:4378
#17 0x00007ffff7dcbf38 in scm_c_with_fluid (fluid=0x7fffe98d0300,
value=value@entry=0x7fffe65a4990, cproc=cproc@entry=0x44dc40
<evaluate_scheme_form_void(void*)>, cdata=cdata@entry=0x7fffffffa4e0) at
fluids.c:463
#18 0x000000000044e1e2 in evaluate_embedded_scheme(scm_unused_struct*, Input
const&, bool, Lily_parser*) (form=0x7fffe65a5570, start=..., safe=<optimized
out>, parser=<optimized out>) at
/home/work/lilypond/lily/include/lily-modules.hh:65
#19 0x00000000006f8806 in Lily_lexer::eval_scm(scm_unused_struct*, Input, char)
(this=this@entry=0x81a410, readerdata=readerdata@entry=0x7fffe65a5570,
location=..., extra_token=extra_token@entry=35 '#') at lexer.ll:1108
#20 0x000000000070561f in Lily_lexer::eval_scm_token(scm_unused_struct*, Input)
(w=..., sval=0x7fffe65a5570, this=0x81a410) at
/home/work/lilypond/lily/include/lily-lexer.hh:62
#21 yyparse(Lily_parser*, scm_unused_struct**) (parser=<optimized out>,
retval=<optimized out>) at parser.yy:452
#22 0x0000000000712857 in Lily_parser::do_yyparse_trampoline(void*)
(parser=parser@entry=0xa6e6c0) at parser.yy:4246
#23 0x00007ffff7dcbf38 in scm_c_with_fluid (fluid=0x7fffe98d0380,
value=0x7fffe7460480, cproc=cproc@entry=0x712840
<Lily_parser::do_yyparse_trampoline(void*)>, cdata=cdata@entry=0xa6e6c0) at
fluids.c:463
#24 0x00000000006fdeec in Lily_parser::do_yyparse() (this=this@entry=0xa6e6c0)
at /home/work/lilypond/lily/include/lily-modules.hh:65
#25 0x00000000006dcd28 in
Lily_parser::parse_file(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&) (this=this@entry=0xa6e6c0, init="init.ly",
name="/tmp/document.ly", out_name="document") at lily-parser.cc:118
#26 0x00000000004fa129 in ly_parse_file(scm_unused_struct*) (name=<optimized
out>) at lily-parser-scheme.cc:124
#27 0x00007ffff7dc3cf3 in deval (x=<optimized out>, x@entry=0x7fffe80b8630,
env=<optimized out>, env@entry=0x7fffe7460510) at eval.c:4232
#28 0x00007ffff7dc16a6 in scm_dapply (proc=0x7fffe7460620, arg1=<optimized
out>, args=0x7fffe7460510) at ../libguile/inline.h:305
#29 0x00007ffff7e1c971 in scm_c_catch
(tag=<optimized out>, body=body@entry=0x7ffff7e1c380 <scm_body_thunk>,
body_data=body_data@entry=0x7fffffffcb50, handler=0x7ffff7e1c390
<scm_handle_by_proc>, handler_data=handler_data@entry=0x7fffffffcb48,
pre_unwind_handler=0x0, pre_unwind_handler_data=0x7fffffffcb40)
at throw.c:203
#30 0x00007ffff7e1cba1 in scm_catch_with_pre_unwind_handler (key=<optimized
out>, thunk=<optimized out>, handler=<optimized out>,
pre_unwind_handler=<optimized out>) at throw.c:587
#31 0x00007ffff7dc11a0 in scm_dapply (proc=0x7fffe99104f0, arg1=0x7fffea303940,
args=0x7fffe7460560, args@entry=0x404) at eval.c:4930
#32 0x00007ffff7dc3d41 in deval (x=<optimized out>, env=<optimized out>,
env@entry=0x7fffe7460770) at eval.c:4378
#33 0x00007ffff7dc3f73 in deval (x=0x7fffe80bba80, x@entry=0x7fffe80bbf00,
env=0x7fffe7460770, env@entry=0x7fffe7461f30) at ../libguile/inline.h:305
#34 0x00007ffff7dc16a6 in scm_dapply (proc=0x7fffe7461fc0, arg1=<optimized
out>, args=0x7fffe7461f30) at ../libguile/inline.h:305
#35 0x00007ffff7fc5709 in scm_srfi1_for_each (proc=0x7fffe7461fa0,
arg1=0x7fffe7f06e30, args=0x404) at srfi-1.c:1516
#36 0x00007ffff7dc3d5e in deval (x=<optimized out>, env=<optimized out>,
env@entry=0x7fffe7f06780) at eval.c:4367
#37 0x00007ffff7dc3f73 in deval (x=0x7fffe80baff0, env=0x7fffe7f06780,
env@entry=0x7fffe7f06df0) at ../libguile/inline.h:305
#38 0x00007ffff7dc386e in deval (x=0x7fffe7f069b0, x@entry=0x7fffe80c1a10,
env=env@entry=0x7fffe7f06df0) at ../libguile/inline.h:305
#39 0x00007ffff7dc16a6 in scm_dapply (proc=0x7fffe80c1670, arg1=<optimized
out>, args=0x7fffe7f06df0) at ../libguile/inline.h:305
#40 0x00000000005b7548 in Scm_variable::operator()(scm_unused_struct*)
(arg1=<optimized out>, this=<optimized out>) at
/home/work/lilypond/lily/include/lily-modules.hh:73
#41 main_with_guile(void*, int, char**) () at main.cc:540
#42 0x00007ffff7ddd083 in invoke_main_func (body_data=0x7fffffffd6b0) at
init.c:367
#43 0x00007ffff7db33fe in c_body (d=d@entry=0x7fffffffd650) at
continuations.c:349
#44 0x00007ffff7e1c971 in scm_c_catch
(tag=tag@entry=0x104, body=body@entry=0x7ffff7db33f0 <c_body>,
body_data=body_data@entry=0x7fffffffd650, handler=handler@entry=0x7ffff7db3410
<c_handler>, handler_data=handler_data@entry=0x7fffffffd650,
pre_unwind_handler=pre_unwind_handler@entry=0x7ffff7e1d080
<scm_handle_by_message_noexit>, pre_unwind_handler_data=0x0) at throw.c:203
#45 0x00007ffff7db3a18 in scm_i_with_continuation_barrier
(body=body@entry=0x7ffff7db33f0 <c_body>,
body_data=body_data@entry=0x7fffffffd650, handler=handler@entry=0x7ffff7db3410
<c_handler>, handler_data=handler_data@entry=0x7fffffffd650,
pre_unwind_handler=0x7ffff7e1d080 <scm_handle_by_message_noexit>,
pre_unwind_handler_data=pre_unwind_handler_data@entry=0x0) at
continuations.c:325
#46 0x00007ffff7db3b04 in scm_c_with_continuation_barrier
(func=func@entry=0x7ffff7ddd060 <invoke_main_func>,
data=data@entry=0x7fffffffd6b0) at continuations.c:367
#47 0x00007ffff7e1a90a in scm_i_with_guile_and_parent
(func=func@entry=0x7ffff7ddd060 <invoke_main_func>,
data=data@entry=0x7fffffffd6b0, parent=<optimized out>) at threads.c:733
#48 0x00007ffff7e1a960 in scm_with_guile (func=func@entry=0x7ffff7ddd060
<invoke_main_func>, data=data@entry=0x7fffffffd6b0) at threads.c:721
#49 0x00007ffff7ddd1a9 in scm_boot_guile (argc=argc@entry=2,
argv=argv@entry=0x7fffffffd848, main_func=main_func@entry=0x5b7340
<main_with_guile(void*, int, char**)>, closure=closure@entry=0x0) at init.c:350
#50 0x000000000042490a in main(int, char**, char**) (argc=2,
argv=0x7fffffffd848, envp=<optimized out>) at main.cc:877
~~~
---
** [issues:#5964] Multi_measure_rest_engraver segfaults when its context
doesn’t include Staff_symbol_engraver.**
**Status:** Accepted
**Labels:** Regression
**Created:** Wed May 06, 2020 10:47 PM UTC by Valentin Villenave
**Last Updated:** Wed May 06, 2020 10:53 PM UTC
**Owner:** nobody
This used to work as recently as 2.20.0, and it no longer does:
~~~~
\version 2.21.1
\layout {
\context {
\type Engraver_group
\name GlobalRests
%\consists Staff_symbol_engraver
%\omit StaffSymbol
\consists Multi_measure_rest_engraver
}
\context {
\Score
\accepts GlobalRests
}
}
\score {
\new GlobalRests { R1 }
}
~~~~
Uncommenting the Staff_symbol_engraver prevents the segfault from happening.
Here’s what gdb has to say:
~~~
Program received signal SIGSEGV, Segmentation fault.
Grob::internal_get_property (this=this@entry=0x0, sym=0x7fffe98e1ea0) at
grob-property.cc:162
162 SCM val = get_property_data (this, sym);
~~~
Reported by Trevor B:
https://lists.gnu.org/archive/html/lilypond-user/2020-05/msg00077.html
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