#479: Segfaulting in PGE;Perl6Grammar;Compiler;compile
(t/compilers/pge/pge_examples.t)
---------------------+------------------------------------------------------
Reporter: wiml | Type: bug
Status: new | Priority: normal
Milestone: | Component: core
Version: trunk | Severity: high
Keywords: ppc jit | Lang:
Patch: | Platform: netbsd
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"make testj" has one segfaulting test on netbsd-ppc. I've narrowed it down
to the invocation of {{{p6grammar.'compile'}}} in
{{{t/compilers/pge/pge_examples.t}}}. I'm attaching a transcript of a
debugger session, but the highlights are:
{{{
(gdb) run -D4 -R jit ./poo.pir
Starting program: /home/wiml/perl6/partest/parrot -D4 -R jit ./poo.pir
Program received signal SIGSEGV, Segmentation fault.
0x019ebfdc in Parrot_set_p_i (cur_opcode=0x27098ec, interp=0x1fd10e0)
at src/ops/set.ops:176
176 VTABLE_set_integer_native(interp, $1, $2);
(gdb) bt
#0 0x019ebfdc in Parrot_set_p_i (cur_opcode=0x27098ec, interp=0x1fd10e0)
at src/ops/set.ops:176
#1 0x02dde5c8 in ?? ()
#2 0x01a2e000 in runops_jit (interp=Cannot access memory at address 0x18
) at src/interpreter.c:751
#3 0x01a2d964 in runops_int (interp=0x1e0a000, offset=0)
at src/interpreter.c:980
...
(gdb) p PDB_backtrace(0x1e0a000)
current instr.: 'parrot;PGE;Perl6Grammar;' pc -1 ((unknown file):-1)
called from Sub 'parrot;PGE;Perl6Grammar;statement' pc 0 (EVAL_5:2)
called from Sub 'parrot;PGE;Perl6Grammar;Compiler;compile' pc 152
(runtime/parrot/library/PGE/Perl6Grammar.pir:135)
called from Sub 'example' pc 0 (./poo.pir:5)
$1 = void
}}}
My parrot checkout has some modifications that were necessary to get it to
build (see my previous tickets) but I think those changes should only be
affecting the exec_save functionality, not jit. The non-JIT runcores work
fine.
--
Ticket URL: <https://trac.parrot.org/parrot/ticket/479>
Parrot <https://trac.parrot.org/parrot/>
Parrot Development
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