K 10
svn:author
V 4
kris
K 8
svn:date
V 27
2001-04-17T07:59:52.000000Z
K 7
svn:log
V 521
Add fmtcheck(), a function for checking consistency of format string
arguments where the format string is obtained from user data, or
otherwise difficult to verify statically.

Example usage:

printf(fmtcheck(user_format, standard_format), arg1, arg2);

checks the format string user_format for consistency (same number/order/
type of format operators) with standard_format.  If they differ,
standard_format is used instead to avoid potential crashes or security
violations.

Obtained from:  NetBSD
Reviewed by:    -arch

END