diff -up libpwquality-1.2.3/src/generate.c.generate-buf libpwquality-1.2.3/src/generate.c

--- libpwquality-1.2.3/src/generate.c.generate-buf	2012-08-07 12:20:31.000000000 +0200

+++ libpwquality-1.2.3/src/generate.c	2017-11-15 11:16:50.954530937 +0100

@@ -100,7 +100,7 @@ consume_entropy(char *buf, int bits, int

 int

 pwquality_generate(pwquality_settings_t *pwq, int entropy_bits, char **password)

 {

-        char entropy[PWQ_MAX_ENTROPY_BITS/8 + 1];

+        char entropy[(PWQ_MAX_ENTROPY_BITS+PWQ_MAX_ENTROPY_BITS/9)/8 + 2];

         char *tmp;

         int maxlen;

         int try = 0;