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[Octave-bug-tracker] [bug #52609] Invoking qr() twice causes a segfault
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From: |
Rik |
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Subject: |
[Octave-bug-tracker] [bug #52609] Invoking qr() twice causes a segfault |
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Date: |
Thu, 7 Dec 2017 01:14:24 -0500 (EST) |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
Follow-up Comment #1, bug #52609 (project octave):
Here is the start of a backtrace
#0 0x00007f585274501c in
std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_lock_nothrow (
this=<error reading variable: Cannot access memory at address
0x7ffde545aff8>)
at /usr/include/c++/5/bits/shared_ptr_base.h:282
#1 0x00007f585275941b in
std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count
(this=0x7ffde545b0e8, __r=...)
at /usr/include/c++/5/bits/shared_ptr_base.h:840
#2 0x00007f58527540e6 in
std::__shared_ptr<octave::symbol_record::symbol_record_rep,
(__gnu_cxx::_Lock_policy)2>::__shared_ptr (this=0x7ffde545b0e0, __r=...) at
/usr/include/c++/5/bits/shared_ptr_base.h:1147
#3 0x00007f585274fece in
std::shared_ptr<octave::symbol_record::symbol_record_rep>::shared_ptr
(this=0x7ffde545b0e0,
__r=std::weak_ptr (count 104664, weak 2) 0x19766e0) at
/usr/include/c++/5/bits/shared_ptr.h:328
#4 0x00007f585274c51a in
std::weak_ptr<octave::symbol_record::symbol_record_rep>::lock
(this=0x1976710)
at /usr/include/c++/5/bits/shared_ptr.h:527
#5 0x00007f58528eff61 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:308
#6 0x00007f58528eff85 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:309
#7 0x00007f58528eff85 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:309
#8 0x00007f58528eff85 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:309
#9 0x00007f58528eff85 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:309
#10 0x00007f58528eff85 in
octave::symbol_record::symbol_record_rep::is_added_static (this=0x19766e0)
at libinterp/corefcn/symrec.h:309
This goes on for at least 20,000 more lines.
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