From 3712db9cc6365e556a803daf32416ae929e95330 Mon Sep 17 00:00:00 2001
From: peavey <peavey@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Sun, 17 Dec 2006 02:46:47 +0000
Subject: Invented safe delete-while-itering for hash_map.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@6029 e03df62e-2008-0410-955e-edbf42e46eb7
---
 include/command_parse.h |  2 ++
 src/command_parse.cpp   | 30 ++++++++++++++++++++----------
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/include/command_parse.h b/include/command_parse.h
index 98e189f9a..b9e57035d 100644
--- a/include/command_parse.h
+++ b/include/command_parse.h
@@ -175,6 +175,8 @@ class CommandParser : public classbase
 	 */
 	bool RemoveCommands(const char* source);
 
+	void RemoveCommand(nspace::hash_map<std::string,command_t*>::iterator safei, const char* source);
+
 	/** Add a new command to the commands hash
 	 * @param f The new command_t to add to the list
 	 * @param so_handle The handle to the shared object where the command can be found.
diff --git a/src/command_parse.cpp b/src/command_parse.cpp
index e56005751..3ce91afda 100644
--- a/src/command_parse.cpp
+++ b/src/command_parse.cpp
@@ -452,24 +452,34 @@ void CommandParser::ProcessCommand(userrec *user, std::string &cmd)
 
 bool CommandParser::RemoveCommands(const char* source)
 {
-	nspace::hash_map<std::string,command_t*>::iterator i, safeiter, last_iter;
-	last_iter = cmdlist.begin();
-
+	nspace::hash_map<std::string,command_t*>::iterator i,safei;
 	for (i = cmdlist.begin(); i != cmdlist.end(); i++)
 	{
-		if (i->second->source == std::string(source))
+		safei = i;
+		safei++;
+		if (safei != cmdlist.end())
 		{
-			ServerInstance->Log(DEBUG, "removecommands(%s) Removing dependent command: %s", i->second->source.c_str(), i->second->command.c_str());
-			safeiter = i;
-			i = last_iter;
-			cmdlist.erase(safeiter);
-			continue;
+			RemoveCommand(safei, source);
 		}
-		last_iter = i;
+	}
+	safei = cmdlist.begin();
+	if (safei != cmdlist.end())
+	{
+		RemoveCommand(safei, source);
 	}
 	return true;
 }
 
+void CommandParser::RemoveCommand(nspace::hash_map<std::string,command_t*>::iterator safei, const char* source)
+{
+	command_t* x = safei->second;
+	if (x->source == std::string(source))
+	{
+		ServerInstance->Log(DEBUG,"removecommands(%s) Removing dependent command: %s",x->source.c_str(),x->command.c_str());
+		cmdlist.erase(safei);
+	}
+}
+
 void CommandParser::ProcessBuffer(std::string &buffer,userrec *user)
 {
 	std::string::size_type a;
-- 
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