nqp::can.log

[dan@alexandria perl6]$ gdb --args ./install/bin/raku -e 'use nqp; say nqp::can(::(1), "chars")'
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Reading symbols from ./install/bin/raku...
(gdb) b MVM_exception_throw_adhoc
Function "MVM_exception_throw_adhoc" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (MVM_exception_throw_adhoc) pending.
(gdb) r
Starting program: /home/dan/Source/perl6/install/bin/raku -e use\ nqp\;\ say\ nqp::can\(::\(1\),\ \"chars\"\)
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff718a640 (LWP 658279)]

Thread 1 "raku" hit Breakpoint 1, MVM_exception_throw_adhoc (tc=0x38808030080, messageFormat=messageFormat@entry=0x7ffff798b2c8 "getexmessage needs a VMException, got %s (%s)") at src/core/exceptions.c:882
882     MVM_NO_RETURN void MVM_exception_throw_adhoc(MVMThreadContext *tc, const char *messageFormat, ...) {
(gdb) bt
#0  MVM_exception_throw_adhoc (tc=0x38808030080, messageFormat=messageFormat@entry=0x7ffff798b2c8 "getexmessage needs a VMException, got %s (%s)") at src/core/exceptions.c:882
#1  0x00007ffff77f407e in MVM_get_exception_message (tc=<optimized out>, ex=<optimized out>) at src/core/exceptions.c:1017
#2  0x00007ffff78077c0 in MVM_interp_run (tc=0x38808030080, initial_invoke=0x7ffff798b2c8, initial_invoke@entry=0x7ffff7936c90 <toplevel_initial_invoke>, invoke_data=0x7ffff798b2c8, 
    invoke_data@entry=0x7ffff7936c90 <toplevel_initial_invoke>, outer_runloop=0x38808964300, outer_runloop@entry=0x0) at src/core/interp.c:1182
#3  0x00007ffff7937db5 in MVM_vm_run_file (instance=instance@entry=0x38808020000, filename=filename@entry=0x555555559520 "/home/dan/Source/perl6/install/share/perl6/runtime/perl6.moarvm") at src/moar.c:505
#4  0x00005555555557d8 in main (argc=<optimized out>, argv=0x7fffffffe3a8) at src/vm/moar/runner/main.c:474
(gdb) call MVM_dump_backtrace(tc)
   at src/vm/moar/ModuleLoader.nqp:57  (/home/dan/Source/perl6/install/share/nqp/lib/ModuleLoader.moarvm:)
 from gen/moar/stage2/NQPCORE.setting:1704  (/home/dan/Source/perl6/install/share/nqp/lib/NQPCORE.setting.moarvm:join)
 from gen/moar/World.nqp:5121  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/World.moarvm:find_symbol)
 from gen/moar/World.nqp:4898  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/World.moarvm:is_type)
 from gen/moar/Grammar.nqp:3157  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term:sym<name>)
 from gen/moar/stage2/QRegex.nqp:1704  (/home/dan/Source/perl6/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term)
 from gen/moar/Grammar.nqp:3711  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:termish)
 from gen/moar/stage2/NQPHLL.nqp:1249  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:EXPR)
 from gen/moar/Grammar.nqp:3754  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:EXPR)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:arglist)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:semiarglist)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:args)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term:sym<nqp::op>)
 from gen/moar/stage2/QRegex.nqp:1704  (/home/dan/Source/perl6/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term)
 from gen/moar/Grammar.nqp:3711  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:termish)
 from gen/moar/stage2/NQPHLL.nqp:1249  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:EXPR)
 from gen/moar/Grammar.nqp:3754  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:EXPR)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:arglist)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:args)
 from gen/moar/Grammar.nqp:3183  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term:sym<name>)
 from gen/moar/stage2/QRegex.nqp:1704  (/home/dan/Source/perl6/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:term)
 from gen/moar/Grammar.nqp:3711  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:termish)
 from gen/moar/stage2/NQPHLL.nqp:1249  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:EXPR)
 from gen/moar/Grammar.nqp:3754  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:EXPR)
 from gen/moar/Grammar.nqp:962  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:statement)
 from gen/moar/Grammar.nqp:890  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:statementlist)
 from gen/moar/stage2/NQPHLL.nqp:1471  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:LANG)
 from gen/moar/Grammar.nqp:1342  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:FOREIGN_LANG)
 from gen/moar/Grammar.nqp:838  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:comp_unit)
 from gen/moar/Grammar.nqp:553  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Grammar.moarvm:TOP)
 from gen/moar/stage2/QRegex.nqp:2267  (/home/dan/Source/perl6/install/share/nqp/lib/QRegex.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:2301  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:2217  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:execute_stage)
 from gen/moar/stage2/NQPHLL.nqp:2252  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:run)
 from gen/moar/stage2/NQPHLL.nqp:2248  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:2244  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:compile)
 from gen/moar/stage2/NQPHLL.nqp:1919  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:eval)
 from gen/moar/stage2/NQPHLL.nqp:2059  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:2058  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from gen/moar/Compiler.nqp:111  (/home/dan/Source/perl6/install/share/perl6/lib/Perl6/Compiler.moarvm:command_eval)
 from gen/moar/stage2/NQPHLL.nqp:2039  (/home/dan/Source/perl6/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from gen/moar/rakudo.nqp:140  (/home/dan/Source/perl6/install/share/perl6/runtime/perl6.moarvm:MAIN)
 from gen/moar/rakudo.nqp:1  (/home/dan/Source/perl6/install/share/perl6/runtime/perl6.moarvm:<mainline>)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/runtime/perl6.moarvm:<main>)
 from <unknown>:1  (/home/dan/Source/perl6/install/share/perl6/runtime/perl6.moarvm:<entry>)
(gdb)