the following script crashes php3 when trying to send a mail:

<?
mail("japj@oce.nl","Test Mail","Some text");
?>

building a debug build of PHP3 shows that SendText in "win32\sendmail.c" uses the headers variable in a strstr action. Unfortunately when not specifying the optional headers parameter in mail() the headers variable is NULL and this crashes PHP3.

WORKAROUND at the moment is to do the following:

<?
mail("japj@oce.nl","Test Mail","Some text","");
?>