Tweaked the calculation that goes into sum->count so that it cannot

overflow into a negative value (which is particularly important if
configure didn't find a real int64 type).

diff --git a/generator.c b/generator.c
index 08ea1db..3ed3385 100644 (file)
--- a/generator.c
+++ b/generator.c
@@ -446,8 +446,8 @@ static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
        sum->flength    = len;
        sum->blength    = blength;
        sum->s2length   = s2length;
-       sum->count      = (len + (blength - 1)) / blength;
-       sum->remainder  = (len % blength);
+       sum->remainder  = len % blength;
+       sum->count      = len / blength + (sum->remainder != 0);
 
        if (sum->count && verbose > 2) {
                rprintf(FINFO,