mingw compilation problem-> warning: implicit declaration of function `bzero'

hi,
this is not really a postgres issue.

i am trying to compile a trigger function under MINGW32. its giving the
said warning. the call of bzero is

 bzero(data, sizeof(AuditData));

$  gcc --version
gcc.exe (GCC) 3.4.2 (mingw-special)
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

the code compiles fine under linux gcc (version not sure)

can anyone please suggest how to prevent this warning.

regds
mallah.