Some missing return checks

diff --git a/regress/lib/libcrypto/ecdsa/ecdsatest.c b/regress/lib/libcrypto/ecdsa/ecdsatest.c
index 6cbe345..cb8f38b 100644 (file)
--- a/regress/lib/libcrypto/ecdsa/ecdsatest.c
+++ b/regress/lib/libcrypto/ecdsa/ecdsatest.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ecdsatest.c,v 1.12 2022/08/31 09:38:00 tb Exp $       */
+/*     $OpenBSD: ecdsatest.c,v 1.13 2022/08/31 09:39:59 tb Exp $       */
 /*
  * Written by Nils Larsch for the OpenSSL project.
  */
@@ -340,7 +340,8 @@ test_builtin(BIO *out)
                        goto builtin_err;
 
                sig_ptr2 = signature;
-               sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+               if ((sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2)) <= 0)
+                       goto builtin_err;
                if (ECDSA_verify(0, digest, 20, signature, sig_len,
                    eckey) == 1) {
                        BIO_printf(out, " failed\n");
@@ -363,7 +364,8 @@ test_builtin(BIO *out)
                        goto builtin_err;
 
                sig_ptr2 = signature;
-               sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+               if ((sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2)) <= 0)
+                       goto builtin_err;
                if (ECDSA_verify(0, digest, 20, signature, sig_len,
                    eckey) != 1) {
                        BIO_printf(out, " failed\n");