CERT's Secure Coding wiki has more to say on the subject, including portable code for a memset_s() function that can still potentially be optimized way: https:

CERT's Secure Coding wiki has more to say on the subject, including portable code for a memset_s() function that can still potentially be optimized way: https://www.securecoding.cert.org/confluence/display/seccode/MSC06-C.+Be+aware+of+compiler+optimization+when+dealing+with+sensitive+data https://www.securecoding.cert.org/confluence/display/seccode... https://www.securecoding.cert.org/confluence/pages/worddav/preview.action?pageId=3524&fileName=protecting-sensitive-data.pdf https://www.securecoding.cert.org/confluence/pages/worddav/p...