From 3b5b6f89026d437b8bcdb9384d053e42095c883a Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 26 Mar 2016 13:09:47 +0100 Subject: strfry: fix support for empty strings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/string/strfry.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/string/strfry.c b/src/string/strfry.c index b46fb06..aa09d0b 100644 --- a/src/string/strfry.c +++ b/src/string/strfry.c @@ -35,12 +35,13 @@ */ char* strfry(char* anagram) { - size_t i, j; + size_t i, j, n; int r; char t; if (anagram == NULL) return NULL; - for (i = strlen(anagram) - 1; i; i--) + n = strlen(anagram); + for (i = n - 1; n && i; i--) { r = rand(); j = (size_t)((double)r / ((double)RAND_MAX + 1) * (double)i); /* TODO This is not uniformally random. */ -- cgit v1.2.3-70-g09d2