Fix for bug #569, thanks dz.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@9986 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 9 insertions, 0 deletions

diff --git a/src/hashcomp.cpp b/src/hashcomp.cpp
index 1bcb538f6..18846737f 100644
--- a/src/hashcomp.cpp
+++ b/src/hashcomp.cpp
@@ -382,6 +382,9 @@ int irc::modestacker::GetStackedLine(std::deque<std::string> &result, int max_li
 
 irc::stringjoiner::stringjoiner(const std::string &seperator, const std::vector<std::string> &sequence, int begin, int end)
 {
+	if (end < begin)
+		throw "stringjoiner logic error, this causes problems.";
+
 	for (int v = begin; v < end; v++)
 		joined.append(sequence[v]).append(seperator);
 	joined.append(sequence[end]);
@@ -389,6 +392,9 @@ irc::stringjoiner::stringjoiner(const std::string &seperator, const std::vector<
 
 irc::stringjoiner::stringjoiner(const std::string &seperator, const std::deque<std::string> &sequence, int begin, int end)
 {
+	if (end < begin)
+		throw "stringjoiner logic error, this causes problems.";
+
 	for (int v = begin; v < end; v++)
 		joined.append(sequence[v]).append(seperator);
 	joined.append(sequence[end]);
@@ -396,6 +402,9 @@ irc::stringjoiner::stringjoiner(const std::string &seperator, const std::deque<s
 
 irc::stringjoiner::stringjoiner(const std::string &seperator, const char* const* sequence, int begin, int end)
 {
+	if (end < begin)
+		throw "stringjoiner logic error, this causes problems.";
+
 	for (int v = begin; v < end; v++)
 		joined.append(sequence[v]).append(seperator);
 	joined.append(sequence[end]);