add "just in case" code if our multiplier gets too big

I don't think that this can happen the way we use the modulo
code, but I feel somewhat safer with the check in place...

diff --git a/ext/solv_pgpvrfy.c b/ext/solv_pgpvrfy.c
index 5dad742..9bc256c 100644 (file)
--- a/ext/solv_pgpvrfy.c
+++ b/ext/solv_pgpvrfy.c
@@ -70,6 +70,8 @@ mpdomod(int len, mp_t *target, mp2_t x, mp_t *mod)
       /* reduce */
       mp2_t z = x / ((mp2_t)mod[i] + 1);
       mp2_t n = 0;
+      if ((z >> MP_T_BITS) != 0)
+       z = (mp2_t)1 << MP_T_BITS;      /* just in case... */
       for (j = 0; j < i; j++)
        {
          mp_t n2;