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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: Wed, 18 Jul 2012 11:51:52 +0900
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On 2012-07-18 AM 4:55, Nicholas DiPiazza wrote:
> Jojelino asked:
>
>    "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"
>
>
> Here is the result:
>
> $ 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/windows7-vm/perl-5.6.2/perl...done.
> (gdb) b _sigfe_free if *((unsigned*)$esp+1)==0x20000010
> Function "_sigfe_free" not defined.
> Make breakpoint pending on future shared library load? (y or [n]) y
>
> Breakpoint 1 (_sigfe_free if *((unsigned*)$esp+1)==0x20000010) pending.
> (gdb) disp *((unsigned*)$esp+1)
> (gdb) r
> Starting program: /home/windows7-vm/perl-5.6.2/perl
> [New Thread 2320.0xc08]
> [New Thread 2320.0xdac]
>
> Program received signal SIGABRT, Aborted.
> 0x7718f8b1 in ntdll!RtlUpdateClonedSRWLock ()
>     from /cygdrive/c/Windows/system32/ntdll.dll
> 1: *((unsigned*)$esp+1) = 1987840657
> (gdb) bt
> #0  0x7718f8b1 in ntdll!RtlUpdateClonedSRWLock ()
>     from /cygdrive/c/Windows/system32/ntdll.dll
> #1  0x7718f8b1 in ntdll!RtlUpdateClonedSRWLock ()
>     from /cygdrive/c/Windows/system32/ntdll.dll
> #2  0x767c0a91 in WaitForSingleObjectEx ()
>     from /cygdrive/c/Windows/syswow64/KERNELBASE.dll
> #3  0x000000a8 in ?? ()
> #4  0x00000000 in ?? ()
>
>
I'm sorry, the breakpoint wasn't hit.  what was the result of
gdb --args perl
symbol cygwin1.dll
define btc
bt
c
end
# "Function "_sigfe_free" not defined." shouldn't be seen. if it does, 
please use latest snapshot including debug symbol.
b _sigfe_free
disp *((unsigned*)$esp+1)
r
btc
#and just press enter until sigabrt is hit.
-- 
Regards.


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