From e1f8907816cfc105a23766bf7daa101a2f38a367 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20K=C3=BCmmel?= <syntheticpp@gmx.net>
Date: Sat, 15 Jan 2011 19:52:55 +0000
Subject: [PATCH] fix #7240 Random crashes: iconv() is not thread save

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@37217 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/support/unicode.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/support/unicode.cpp b/src/support/unicode.cpp
index 26c6a239d7..0e773f5327 100644
--- a/src/support/unicode.cpp
+++ b/src/support/unicode.cpp
@@ -25,6 +25,8 @@
 #include <ostream>
 #include <string>
 
+#include <QMutexLocker>
+
 using namespace std;
 
 namespace {
@@ -64,6 +66,8 @@ struct IconvProcessor::Impl
 	iconv_t cd;
 	string tocode_;
 	string fromcode_;
+
+	QMutex mutex_; // iconv() is not thread save
 };
 
 
@@ -120,6 +124,8 @@ bool IconvProcessor::init()
 int IconvProcessor::convert(char const * buf, size_t buflen,
 		char * outbuf, size_t maxoutsize)
 {
+	QMutexLocker lock(&pimpl_->mutex_);
+
 	if (buflen == 0)
 		return 0;