Make async_read and async_write return -1 on failure.

Reviewed-by: Matt Caswell <matt@openssl.org>
GH: #1966

diff --git a/test/asynciotest.c b/test/asynciotest.c
index 23d0907dc9151ece990d757e68ff3012bd1d3695..0d382d70f6ef5db1e88588bca3565740ef9cb458 100644 (file)
--- a/test/asynciotest.c
+++ b/test/asynciotest.c
@@ -85,7 +85,7 @@ static int async_free(BIO *bio)
 static int async_read(BIO *bio, char *out, int outl)
 {
     struct async_ctrs *ctrs;
-    int ret = 0;
+    int ret = -1;
     BIO *next = BIO_next(bio);
 
     if (outl <= 0)
@@ -120,7 +120,7 @@ static int async_read(BIO *bio, char *out, int outl)
 static int async_write(BIO *bio, const char *in, int inl)
 {
     struct async_ctrs *ctrs;
-    int ret = 0;
+    int ret = -1;
     size_t written = 0;
     BIO *next = BIO_next(bio);