Revision 05f61fb27efaf1a3f4cfa1a8d4d62c34e3c8a0fe authored by Emilia Kasper on 25 August 2014, 10:38:16 UTC, committed by Emilia Kasper on 27 August 2014, 17:42:31 UTC
The old code implicitly relies on the ASN.1 code returning a \0-prefixed buffer when the buffer length is 0. Change this to verify explicitly that the ASN.1 string has positive length. Reviewed-by: Dr Stephen Henson <steve@openssl.org> (cherry picked from commit 82dc08de54ce443c2a9ac478faffe79e76157795)
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ERR_set_mark.pod
=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
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