ERR_pop_to_mark(3ssl) - phpMan

ERR_SET_MARK(3)                     OpenSSL                    ERR_SET_MARK(3)
NAME
       ERR_set_mark, ERR_pop_to_mark - set marks and pop errors until mark
SYNOPSIS
        #include <openssl/err.h>
        int ERR_set_mark(void);
        int ERR_pop_to_mark(void);
DESCRIPTION
       ERR_set_mark() sets a mark on the current topmost error record if there
       is one.
       ERR_pop_to_mark() will pop the top of the error stack until a mark is
       found.  The mark is then removed.  If there is no mark, the whole stack
       is removed.
RETURN VALUES
       ERR_set_mark() returns 0 if the error stack is empty, otherwise 1.
       ERR_pop_to_mark() returns 0 if there was no mark in the error stack,
       which implies that the stack became empty, otherwise 1.
COPYRIGHT
       Copyright 2003-2017 The OpenSSL Project Authors. All Rights Reserved.
       Licensed under the OpenSSL license (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>;.
1.1.1k                            2021-03-25                   ERR_SET_MARK(3)