In the UTF-8 branch of crypt() the extra \0 byte is required,

found by Marc Lehmann.

p4raw-id: //depot/perl@14085

diff --git a/pp.c b/pp.c
index eb386ee..8b58c16 100644 (file)
--- a/pp.c
+++ b/pp.c
@@ -3180,12 +3180,12 @@ PP(pp_crypt)
     char *tmps = SvPV(left, len);
     char *t    = 0;
     if (DO_UTF8(left)) {
-         /* If Unicode take the crypt() of the low 8 bits
-         * of the characters of the string. */
+         /* If Unicode take the crypt() of the low 8 bits of
+         * the characters of the string.  Yes, we made this up.  */
         char *s    = tmps;
         char *send = tmps + len;
         STRLEN i   = 0;
-        Newz(688, t, len, char);
+        Newz(688, t, len + 1, char);
         while (s < send) {
              t[i++] = utf8_to_uvchr((U8*)s, 0) & 0xFF;
              s += UTF8SKIP(s);