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From: Nicholas DiPiazza <nicholas DOT dipiazza AT openlogic DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin 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 19:55:33 +0000
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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 ?? ()


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