~/bld$ gdb writen
GNU gdb 6.3.50_2004-12-28-cvs (cygwin-special)
Copyright 2004 Free Software Foundation, Inc.
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This GDB was configured as "i686-pc-cygwin"...(no debugging symbols found)

(gdb) set args 3000000
(gdb) run
Starting program: /home/scott/bld/writen.exe 3000000

Program received signal SIGSEGV, Segmentation fault.
0x61106323 in cygwin1!_alloca () from /usr/bin/cygwin1.dll
(gdb) bt
#0  0x61106323 in cygwin1!_alloca () from /usr/bin/cygwin1.dll
#1  0x6102bca5 in cygwin_internal () from /usr/bin/cygwin1.dll
#2  0x610ad7db in getppid () from /usr/bin/cygwin1.dll
#3  0x610a087f in cygwin1!aclcheck () from /usr/bin/cygwin1.dll
#4  0x0043307c in std::basic_filebuf<char, std::char_traits<char> >::xsputn ()
#5  0x0043e8b2 in std::operator<< <std::char_traits<char> > ()
#6  0x004012ec in main ()
(gdb)