Re: segfault on 'make check'

[John W. Eaton]

On  7-Dec-2011, Ben Abbott wrote:

| My tip is ...
| 
| $ hg tip
| changeset:   14006:54f76558c41a
| tag:         tip
| user:        John W. Eaton <address@hidden>
| date:        Wed Dec 07 06:55:12 2011 -0500
| summary:     avoid gh_manager segfault
| 
| "make check" completes, but the seg-faults when octave tries to exit.
| 
| I ran the tests from gdb
| 
| Program received signal EXC_BAD_ACCESS, Could not access memory.
| Reason: KERN_INVALID_ADDRESS at address: 0x000000010de180f2
| 0x000000010de180f2 in ?? ()
| (gdb) bt
| #0  0x000000010de180f2 in ?? ()
| Cannot access memory at address 0x10de180f2
| #1  0x000000010de18461 in ?? ()
| #2  0x00000001004de7a0 in octave_value_typeinfo::~octave_value_typeinfo ()
| #3  0x00000001004de8dd in octave_value_typeinfo::cleanup_instance ()
| #4  0x00000001028c6d93 in singleton_cleanup_list::~singleton_cleanup_list ()
| #5  0x0000000100391442 in clean_up_and_exit ()
| #6  0x0000000100324c79 in octave_main ()
| #7  0x0000000100000f44 in start ()
| 
| If I apply the ov-typeinfo.cc patch (below) ....
| 
| diff -r 1221086f1ba5 src/ov-typeinfo.cc
| --- a/src/ov-typeinfo.cc      Mon Dec 05 16:08:13 2011 -0500
| +++ b/src/ov-typeinfo.cc      Mon Dec 05 14:24:48 2011 -0800
| @@ -46,8 +46,10 @@
|      {
|        instance = new octave_value_typeinfo ();
|  
| +#if 0
|        if (instance)
|          singleton_cleanup_list::add (cleanup_instance);
| +#endif
|      }
|  
|    if (! instance)
| 
| Then "make check" runs and exists cleanly.

I'm not seeing this crash, but I checked in this change as a temporary
fix for those of you who are.

I don't know that I'll be able to debug this problem unless I can
find a way to reproduce it myself.

jwe