Eliminate 'operation on seed may be undefined' gcc warning in disclaim.c

(fix of commit 2b10620b1)

* tests/disclaim.c (test): Declare j local variable; set j to
rand()%POP_SIZE; pass pop[j] to pair_new() as the first argument
instead of pop[rand()%POP_SIZE].

1 files changed, 4 insertions, 2 deletions

diff --git a/tests/disclaim.c b/tests/disclaim.c
index cd777381..94a75f72 100644
--- a/tests/disclaim.c
+++ b/tests/disclaim.c
@@ -198,6 +198,8 @@ void *test(void *data)
     memset(pop, 0, sizeof(pop));
     for (i = 0; i < MUTATE_CNT; ++i) {
         int t = rand() % POP_SIZE;
+        int j;
+
         switch (rand() % (i > GROW_LIMIT? 5 : 3)) {
         case 0: case 3:
             if (pop[t])
@@ -208,8 +210,8 @@ void *test(void *data)
                 pop[t] = pop[t]->cdr;
             break;
         case 2:
-            pop[t] = pair_new(pop[rand() % POP_SIZE],
-                              pop[rand() % POP_SIZE]);
+            j = rand() % POP_SIZE;
+            pop[t] = pair_new(pop[j], pop[rand() % POP_SIZE]);
             break;
         }
         if (rand() % 8 == 1)