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-rw-r--r--openssl/doc/crypto/X509_verify_cert.pod3
1 files changed, 2 insertions, 1 deletions
diff --git a/openssl/doc/crypto/X509_verify_cert.pod b/openssl/doc/crypto/X509_verify_cert.pod
index 5253bdcd7..a22e44118 100644
--- a/openssl/doc/crypto/X509_verify_cert.pod
+++ b/openssl/doc/crypto/X509_verify_cert.pod
@@ -32,7 +32,8 @@ OpenSSL internally for certificate validation, in both the S/MIME and
SSL/TLS code.
The negative return value from X509_verify_cert() can only occur if no
-certificate is set in B<ctx> (due to a programming error) or if a retry
+certificate is set in B<ctx> (due to a programming error); if X509_verify_cert()
+twice without reinitialising B<ctx> in between; or if a retry
operation is requested during internal lookups (which never happens with
standard lookup methods). It is however recommended that application check
for <= 0 return value on error.