#1131: segfault in Parrot_assign_p_p after merge of pcc branch.
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Reporter: coke | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: none | Version: trunk
Severity: fatal | Keywords:
Lang: tcl | Patch:
Platform: |
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Changes (by coke):
* lang: => tcl
Comment:
Note that this error doesn't occur when running "parrot tcl.pbc", but only
with the pbc_to_exe version. (in the other case, you get "attempt to
access code outside of current code segment")
Here's the backtrace on the pbc2exe version:
{{{
(gdb) run sg.tcl
Starting program: /home/coke/sandbox/partcl/tclsh sg.tcl
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0x00161dcf in Parrot_assign_p_p (cur_opcode=0xb6fc70e8, interp=0x8052008)
at src/ops/core_ops.c:20683
20683 VTABLE_assign_pmc(interp, PREG(1), PREG(2));
(gdb) bt
#0 0x00161dcf in Parrot_assign_p_p (cur_opcode=0xb6fc70e8,
interp=0x8052008)
at src/ops/core_ops.c:20683
#1 0x001c0001 in runops_fast_core (interp=0x8052008,
runcore_unused=0x80e0028, pc=0xffffffff) at src/runcore/cores.c:514
#2 0x001bf9ce in runops_int (interp=0x8052008, offset=0)
at src/runcore/main.c:237
#3 0x00195a2d in runops (interp=0x8052008, offs=0) at src/call/ops.c:127
#4 0x001919b3 in Parrot_pcc_invoke_from_sig_object (interp=0x8052008,
sub_obj=0x80b4028, call_object=0x80b4208) at src/call/pcc.c:359
#5 0x00191a5e in Parrot_pcc_invoke_sub_from_c_args (interp=0x8052008,
sub_obj=0x80b4028, sig=0x291012 "P->") at src/call/pcc.c:87
#6 0x00184db0 in Parrot_runcode (interp=0x8052008, argc=2,
argv=0xbffff8e4)
at src/embed.c:811
#7 0x08048ba1 in main (argc=2, argv=0xbffff8e4) at tcl.c:271
}}}
the innermost line is -
{{{
VTABLE_assign_pmc(interp, PREG(1), PREG(2));
}}}
But that's macro soup. I can't easily see what PREG(1|2) is.
--
Ticket URL: <https://trac.parrot.org/parrot/ticket/1131#comment:3>
Parrot <https://trac.parrot.org/parrot/>
Parrot Development
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