=pod =head1 NAME ERR_set_mark, ERR_pop_to_mark - set marks and pop errors until mark =head1 SYNOPSIS #include <openssl/err.h> int ERR_set_mark(void); int ERR_pop_to_mark(void); =head1 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. =head1 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. =head1 SEE ALSO L<err(3)|err(3)> =head1 HISTORY ERR_set_mark() and ERR_pop_to_mark() were added in OpenSSL 0.9.8. =cut