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-rw-r--r--doc/man3/X509v3_get_ext_by_NID.pod8
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/man3/X509v3_get_ext_by_NID.pod b/doc/man3/X509v3_get_ext_by_NID.pod
index 9d26bfe19a..4010a71c43 100644
--- a/doc/man3/X509v3_get_ext_by_NID.pod
+++ b/doc/man3/X509v3_get_ext_by_NID.pod
@@ -121,13 +121,15 @@ using X509_EXTENSION_free().
=head1 RETURN VALUES
-X509v3_get_ext_count() returns the extension count.
+X509v3_get_ext_count() returns the extension count or 0 for failure.
X509v3_get_ext(), X509v3_delete_ext() and X509_delete_ext() return an
B<X509_EXTENSION> structure or NULL if an error occurs.
-X509v3_get_ext_by_NID(), X509v3_get_ext_by_OBJ() and
-X509v3_get_ext_by_critical() return the extension index or -1 if an
+X509v3_get_ext_by_OBJ() and X509v3_get_ext_by_critical() return
+the extension index or -1 if an error occurs.
+
+X509v3_get_ext_by_NID() returns the extension index or negative values if an
error occurs.
X509v3_add_ext() returns a STACK of extensions or NULL on error.