Fix VC warnings about unary minus to an unsigned type.

[oweals/openssl.git] / crypto / asn1 / a_object.c

diff --git a/crypto/asn1/a_object.c b/crypto/asn1/a_object.c
index 463469d188bc5536809873c021a00105ee1a2d95..79f0ecd2a868405f79d6561fa412e42362023d0c 100644 (file)
--- a/crypto/asn1/a_object.c
+++ b/crypto/asn1/a_object.c
@@ -26,7 +26,7 @@ int i2d_ASN1_OBJECT(const ASN1_OBJECT *a, unsigned char **pp)
         return (0);
 
     objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
-    if (pp == NULL)
+    if (pp == NULL || objsize == -1)
         return objsize;
 
     p = *pp;
@@ -127,8 +127,12 @@ int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
                 if (tmp == NULL)
                     goto err;
             }
-            while (blsize--)
-                tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L);
+            while (blsize--) {
+                BN_ULONG t = BN_div_word(bl, 0x80L);
+                if (t == (BN_ULONG)-1)
+                    goto err;
+                tmp[i++] = (unsigned char)t;
+            }
         } else {
 
             for (;;) {