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From:	jojelino <jojelino AT gmail DOT com>
Subject:	Re: Built perl 5.6.2 on Cygwin 1.7.11, but get SIGABRT from resulting perl.exe
Date:	Tue, 17 Jul 2012 12:25:25 +0900
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On 2012-07-17 AM 4:52, Nicholas DiPiazza wrote:
> Hi jojelino,
>
> You asked:
>
>> what is result of
>> gdb --args perl
>> b abort
>> r
>> bt (when breakpoint is hit.)
>
> Here it is:
>
> nick AT nick-PC ~/perl-5.6.2
> $ gdb --args perl
> GNU gdb (GDB) 7.3.50.20111026-cvs (cygwin-special)
> Copyright (C) 2011 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i686-cygwin".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /home/nick/perl-5.6.2/perl...done.
> (gdb) b abort
> Function "abort" not defined.
> Make breakpoint pending on future shared library load? (y or [n]) y
>
> Breakpoint 1 (abort) pending.
> (gdb) r
> Starting program: /home/nick/perl-5.6.2/perl
> [New Thread 3916.0xe18]
> [New Thread 3916.0xae4]
>
> Breakpoint 1, abort ()
>      at
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/
>      winsup/cygwin/signal.cc:374
> 374
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15
>     /winsup/cygwin/signal.cc: No such file or directory.
>          in
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7
> ..15/winsup/cygwin/signal.cc
> (gdb) bt
> #0  abort ()
>      at
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/
>      winsup/cygwin/signal.cc:374
> #1  0x6110f305 in dlfree (mem=<optimized out>)
>      at
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/
>      winsup/cygwin/malloc.cc:4242
> #2  0x610831b0 in free (p=0x20000010)
>      at
> /home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/
>      winsup/cygwin/malloc_wrapper.cc:49
> #3  0x610d50f5 in _sigfe () from /cygdrive/c/cygwin/bin/cygwin1.dll
> #4  0x00000000 in ?? ()
> (gdb)
>
> Let me know if you would like to see anything else.
>
>
and then, what was the result of
gdb --args perl
b _sigfe_free if *((unsigned*)$esp+1)==0x20000010 #which i am interested 
in to see what the backtrace was.
disp *((unsigned*)$esp+1)
r
bt #when breakpoint is hit.
-- 
Regards.


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