Fix BIO_dgram_pair stochastic test failure

Fixes #19267. Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from #19268)
openssl · Sep 23, 2022 · 8e90a12 · 8e90a12
1 parent 678b489
commit 8e90a12
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/test/bio_dgram_test.c b/test/bio_dgram_test.c
@@ -530,7 +530,7 @@ static int test_bio_dgram_pair(void)
         if (!TEST_int_eq(random_data(key, scratch, sizeof(scratch), i), 1))
             goto err;
 
-        blen = (*(uint32_t*)scratch) % mtu1;
+        blen = ((*(uint32_t*)scratch) % mtu1) + 1;
         r = BIO_write(bio1, scratch + 4, blen);
         if (r == -1)
             break;
@@ -556,7 +556,7 @@ static int test_bio_dgram_pair(void)
         if (!TEST_int_eq(random_data(key, scratch, sizeof(scratch), i), 1))
             goto err;
 
-        blen = (*(uint32_t*)scratch) % mtu1;
+        blen = ((*(uint32_t*)scratch) % mtu1) + 1;
         r = BIO_read(bio2, scratch2, sizeof(scratch2));
         if (!TEST_int_eq(r, blen))
             goto err;