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-rw-r--r--doc/man3/DEFINE_STACK_OF.pod7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/man3/DEFINE_STACK_OF.pod b/doc/man3/DEFINE_STACK_OF.pod
index 9cec998924..12f033d977 100644
--- a/doc/man3/DEFINE_STACK_OF.pod
+++ b/doc/man3/DEFINE_STACK_OF.pod
@@ -229,6 +229,13 @@ A failed search is indicated by a B<-1> return value.
STACK_OF(), DEFINE_STACK_OF(), DEFINE_STACK_OF_CONST(), and
DEFINE_SPECIAL_STACK_OF() are implemented as macros.
+It is not an error to call B<sk_I<TYPE>_num>(), B<sk_I<TYPE>_value>(),
+B<sk_I<TYPE>_free>(), B<sk_I<TYPE>_zero>(), B<sk_I<TYPE>_pop_free>(),
+B<sk_I<TYPE>_delete>(), B<sk_I<TYPE>_delete_ptr>(), B<sk_I<TYPE>_pop>(),
+B<sk_I<TYPE>_shift>(), B<sk_I<TYPE>_find>(), B<sk_I<TYPE>_find_ex>(),
+and B<sk_I<TYPE>_find_all>() on a NULL stack, empty stack, or with
+an invalid index. An error is not raised in these conditions.
+
The underlying utility B<OPENSSL_sk_> API should not be used directly.
It defines these functions: OPENSSL_sk_deep_copy(),
OPENSSL_sk_delete(), OPENSSL_sk_delete_ptr(), OPENSSL_sk_dup(),