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Id: 125254
Status: new
Priority: 0/
Queue: perl6

Owner: Nobody
Requestors: drforr [at] pobox.com
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Subject: rakudo VM segfault
To: Rakudobug <rakudobug [...] perl.org>
From: drforr [...] pobox.com
Date: Tue, 26 May 2015 21:41:00 +0200
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The segfault obviously occurs in history_get_time(), but it can't be invoked consistently. There are other function calls in the 02-base.t file that segfault, but those are mostly commented out. If someone wants me to golf this down, let me know, but you should be able to just run 'lives-ok { $r.history_get_time() }'. I'm attaching the full .pm and .t files, as they're far too large, along with the backtrace from perl6-gdb-m. It's likely because I'm not calling a function that sets up history_get_time(), but apparently this bug needs to be tracked down. --cut here-- Reading symbols from /home/jgoff/.rakudobrew/moar-nom/install/bin/moar...(no debugging symbols found)...done. Starting program: /home/jgoff/.rakudobrew/moar-nom/install/bin/moar --execname=/home/jgoff/.rakudobrew/bin/../moar-nom/install/bin/perl6-gdb-m --libpath=/home/jgoff/.rakudobrew/moar-nom/install/share/nqp/lib --libpath=/home/jgoff/.rakudobrew/moar-nom/install/share/perl6/lib --libpath=/home/jgoff/.rakudobrew/moar-nom/install/share/perl6/runtime /home/jgoff/.rakudobrew/moar-nom/install/share/perl6/runtime/perl6.moarvm -Ilib t/02-base.t [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 1..15 ok 1 - add-history lives ok 2 - using-history lives ok 3 - history-get-history-state lives ok 4 - history-set-history-state lives ok 5 - add-history-time lives ok 6 - ok 7 - free-history-entry lives ok 8 - replace-history-entry lives ok 9 - ok 1 - history-is-stifled lives ok 2 - stifle-history lives ok 3 - unstifle-history lives 1..3 ok 10 - Stifling ok 11 - where-history lives ok 12 - current-history lives ok 13 - history-get lives Program received signal SIGSEGV, Segmentation fault. 0x00007ffff46ee878 in history_get_time () from /lib/x86_64-linux-gnu/libreadline.so.6 (gdb) bt #0 0x00007ffff46ee878 in history_get_time () from /lib/x86_64-linux-gnu/libreadline.so.6 #1 0x00007ffff79d0054 in dcCall_x64_sysv () from /home/jgoff/.rakudobrew/moar-nom/install/lib/libmoar.so #2 0x0000000000603700 in ?? () #3 0x00007fffffffd300 in ?? () #4 0x00007ffff79cff8f in dc_callvm_call_x64 () from /home/jgoff/.rakudobrew/moar-nom/install/lib/libmoar.so Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) --cut here--
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