From @moritz

Rakudo 5646dfcb7f4a86fbd436205a4934cb95060a9690 on parrot r38385
sometimes segfaults while executing
t/spec/S02-literals/char-by-number.rakudo (as of pugs svn r26562). I've
captured it in gdb once​:

(gdb) run t/spec/S02-literals/char-by-number.rakudo
Starting program​: /home/moritz/rakudo/perl6
t/spec/S02-literals/char-by-number.r
akudo
[Thread debugging using libthread_db enabled]
warning​: Lowest section in /usr/lib/libicudata.so.36 is .hash at
000000000000012
0
[New Thread 0x7f166bf3e6f0 (LWP 5262)]
1..43
ok 1 - \x20 normal space
ok 2 - \xa0 non-breaking space
ok 3 - \x[20] normal space
ok 4 - \x[a0] non-breaking space
ok 5 - \x[263a] wide hex character (SMILEY)
ok 6 - \x[597d] wide hex character (Chinese char)
ok 7 - broken "\x[6211"
not ok 8 - broken "\x [6211]"# TODO feature
ok 9 - \x[list]
ok 10 - \x[a,b]
ok 11 - \xlist not valid
ok 12 - \o40 normal space
ok 13 - \o240 non-breaking space
ok 14 - \o[40] normal space
ok 15 - \o[240] non-breaking space
ok 16 - \o[23072] wide hex character (SMILEY)
ok 17 - \o[61021] wide hex character (Chinese char)
ok 18 - broken "\o[6211"

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f166bf3e6f0 (LWP 5262)]
0x00007f166b72117a in pobject_lives (interp=0x15dc010, obj=0x1)
  at src/gc/mark_sweep.c​:489
489 if (PObj_is_live_or_free_TESTALL(obj))
(gdb) bt
#​0 0x00007f166b72117a in pobject_lives (interp=0x15dc010, obj=0x1)
  at src/gc/mark_sweep.c​:489
#​1 0x00007f166b90b4f8 in Parrot_Object_mark (interp=0x15dc010,
  pmc=0x7f166666ea20) at ./src/pmc/object.pmc​:192
#​2 0x00007f166b7205e7 in mark_special (interp=0x15dc010,
obj=0x7f166666ea20)
  at src/gc/mark_sweep.c​:677
#​3 0x00007f166b7211e3 in pobject_lives (interp=0x15dc010,
obj=0x7f166666ea20)
  at src/gc/mark_sweep.c​:509
#​4 0x00007f166b721cd5 in trace_mem_block (interp=0x15dc010,
  lo_var_ptr=140735138924048, hi_var_ptr=140735138904080)
  at src/gc/system.c​:268
#​5 0x00007f166b721d83 in trace_system_stack (interp=0x15dc010)
  at src/gc/system.c​:164
#​6 0x00007f166b721dfa in trace_system_areas (interp=0x15dc010)
  at src/gc/system.c​:138
#​7 0x00007f166b721776 in Parrot_gc_trace_root (interp=0x15dc010,
  trace=GC_TRACE_FULL) at src/gc/mark_sweep.c​:361
#​8 0x00007f166b7217e2 in trace_active_PMCs (interp=0x15dc010,
  trace=GC_TRACE_FULL) at src/gc/mark_sweep.c​:889
#​9 0x00007f166b7219ce in Parrot_gc_ms_run (interp=0x15dc010, flags=1)
  at src/gc/mark_sweep.c​:208
#​10 0x00007f166b71ba7d in Parrot_do_gc_run (interp=0x15dc010, flags=1)
  at src/gc/api.c​:516
#​11 0x00007f166b7838fd in run_thaw (interp=0x15dc010, image=0x3816208,
  what=VISIT_THAW_NORMAL) at src/pmc_freeze.c​:1858
#​12 0x00007f166b783b88 in Parrot_thaw (interp=0x15dc010, image=0x3816208)
  at src/pmc_freeze.c​:1997
#​13 0x00007f166b6bda76 in Parrot_thaw_p_s (cur_opcode=0x1825f10,
  interp=0x15dc010) at src/ops/pmc.ops​:502
#​14 0x00007f166b7885a5 in runops_slow_core (interp=0x15dc010, pc=0x1825f10)
  at src/runcore/cores.c​:460
#​15 0x00007f166b7872b5 in runops_int (interp=0x15dc010, offset=24)
  at src/runcore/main.c​:981
#​16 0x00007f166b72fd1a in runops (interp=0x15dc010, offs=24)
  at src/call/ops.c​:107
#​17 0x00007f166b729921 in Parrot_pcc_invoke_from_sig_object
(interp=0x15dc010,
  sub_obj=0x7f16679a53c0, sig_obj=0x3b97440) at src/call/pcc.c​:3027
#​18 0x00007f166b8d251a in initialize_parents (interp=0x15dc010,
  object=0x3b974a0, all_parents=0x3b87000) at ./src/pmc/class.pmc​:343
#​19 0x00007f166b8d3d18 in Parrot_Class_instantiate (interp=0x15dc010,
  pmc=0x7f166849bf60, init=0x16651e0) at ./src/pmc/class.pmc​:1202
#​20 0x00007f166b6bdfc6 in Parrot_new_p_pc (cur_opcode=0x7f166bea9a90,
  interp=0x15dc010) at src/ops/pmc.ops​:95
#​21 0x00007f166b7885a5 in runops_slow_core (interp=0x15dc010,
  pc=0x7f166bea9a90) at src/runcore/cores.c​:460
#​22 0x00007f166b7872b5 in runops_int (interp=0x15dc010, offset=468)
  at src/runcore/main.c​:981
#​23 0x00007f166b72fd1a in runops (interp=0x15dc010, offs=468)
  at src/call/ops.c​:107
#​24 0x00007f166b7300f6 in runops_args (interp=0x15dc010,
sub=0x7f166bd94a50,
  obj=0x16651e0, meth_unused=0x0, sig=0x7f166b9b371c "vP",
ap=0x7fff73f67ff0)
  at src/call/ops.c​:255
#​25 0x00007f166b7314ac in Parrot_runops_fromc_args (interp=0x15dc010,
  sub=0x7f166bd94a50, sig=0x7f166b9b371c "vP") at src/call/ops.c​:324
#​26 0x00007f166b71046d in Parrot_ex_throw_from_c (interp=0x15dc010,
  exception=0x7f166bd949f0) at src/exceptions.c​:370
#​27 0x00007f166b710644 in Parrot_ex_throw_from_c_args (interp=0x15dc010,
  ret_addr_unused=0x0, exitcode=51,
  format=0x7f166b9badd0 "can't convert unicode string to ascii")
  at src/exceptions.c​:441
#​28 0x00007f166b82d813 in to_ascii (interp=0x15dc010, src=0x7f166854e798,
  dest=0x7f166854e750) at src/string/charset/ascii.c​:282
#​29 0x00007f166b82e199 in to_charset (interp=0x15dc010, src=0x7f166854e798,
  dest=0x7f166854e750) at src/string/charset/ascii.c​:343
#​30 0x00007f166b690b71 in Parrot_str_change_charset (interp=0x15dc010,
  src=0x7f166854e798, charset_nr=0, dest=0x7f166854e750)
  at src/string/api.c​:2993
#​31 0x00007f166b6b72ba in Parrot_trans_charset_s_s_i (
  cur_opcode=0x7f166bf58028, interp=0x15dc010) at src/ops/string.ops​:555
#​32 0x00007f166b7885a5 in runops_slow_core (interp=0x15dc010,
  pc=0x7f166bf58028) at src/runcore/cores.c​:460
#​33 0x00007f166b7872b5 in runops_int (interp=0x15dc010, offset=23950)
  at src/runcore/main.c​:981
#​34 0x00007f166b72fd1a in runops (interp=0x15dc010, offs=23950)
  at src/call/ops.c​:107
#​35 0x00007f166b7300f6 in runops_args (interp=0x15dc010,
sub=0x7f166bd9bbc0,
  obj=0x16651e0, meth_unused=0x0, sig=0x7f166b9b2ea3 "vP",
ap=0x7fff73f68520)
  at src/call/ops.c​:255
#​36 0x00007f166b7314ac in Parrot_runops_fromc_args (interp=0x15dc010,
  sub=0x7f166bd9bbc0, sig=0x7f166b9b2ea3 "vP") at src/call/ops.c​:324
#​37 0x00007f166b70ca0e in Parrot_runcode (interp=0x15dc010, argc=2,
  argv=0x7fff73f68758) at src/embed.c​:1012
#​38 0x0000000000400cbd in main ()

This is on Debian GNU/Linux 5.0 "Lenny" AMD 64

Cheers,
moritz

--
Moritz Lenz
http://perlgeek.de/ | http://perl-6.de/ | http://sudokugarden.de/

@coke - Status changed from 'new' to 'open'

From @moritz

problem is gone...

@moritz - Status changed from 'open' to 'resolved'