lib: use memzero where applicable

Use memzero when operating in a buffer of known size to clear all bytes
and avoid leaking the size of the stored data.

diff --git a/src/sulogin.c b/src/sulogin.c
index 08feade2f31b22db286b094757a4df512bdfb607..2c5e094333d67cc81d93a76e0fe2e3841418e141 100644 (file)
--- a/src/sulogin.c
+++ b/src/sulogin.c
@@ -216,7 +216,7 @@ static void catch_signals (unused int sig)
                sleep (2);
                (void) puts (_("Login incorrect"));
        }
-       strzero (pass);
+       memzero (pass, sizeof pass);
        (void) alarm (0);
        (void) signal (SIGALRM, SIG_DFL);
        environ = newenvp;      /* make new environment active */