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-rw-r--r--src/corelib/codecs/qtextcodec.cpp39
1 files changed, 39 insertions, 0 deletions
diff --git a/src/corelib/codecs/qtextcodec.cpp b/src/corelib/codecs/qtextcodec.cpp
index 72b0128..59a601e 100644
--- a/src/corelib/codecs/qtextcodec.cpp
+++ b/src/corelib/codecs/qtextcodec.cpp
@@ -110,6 +110,7 @@ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
(QTextCodecFactoryInterface_iid, QLatin1String("/codecs")))
#endif
+
static char qtolower(register char c)
{ if (c >= 'A' && c <= 'Z') return c + 0x20; return c; }
static bool qisalnum(register char c)
@@ -224,6 +225,19 @@ QTextCodecCleanup::~QTextCodecCleanup()
Q_GLOBAL_STATIC(QTextCodecCleanup, createQTextCodecCleanup)
+bool QTextCodec::validCodecs()
+{
+#ifdef Q_OS_SYMBIAN
+ // If we don't have a trap handler, we're outside of the main() function,
+ // ie. in global constructors or destructors. Don't use codecs in this
+ // case as it would lead to crashes because we don't have a cleanup stack on Symbian
+ return (User::TrapHandler() != NULL);
+#else
+ return true;
+#endif
+}
+
+
#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
class QWindowsLocalCodec: public QTextCodec
{
@@ -710,6 +724,14 @@ static void setup()
if (all)
return;
+#ifdef Q_OS_SYMBIAN
+ // If we don't have a trap handler, we're outside of the main() function,
+ // ie. in global constructors or destructors. Don't create codecs in this
+ // case as it would lead to crashes because of a missing cleanup stack on Symbian
+ if (User::TrapHandler() == NULL)
+ return;
+#endif
+
#ifdef Q_DEBUG_TEXTCODEC
if (destroying_is_ok)
qWarning("QTextCodec: Creating new codec during codec cleanup");
@@ -1012,6 +1034,9 @@ QTextCodec *QTextCodec::codecForName(const QByteArray &name)
#endif
setup();
+ if (!validCodecs())
+ return 0;
+
static QHash <QByteArray, QTextCodec *> cache;
if (clearCaches & 0x1) {
cache.clear();
@@ -1053,6 +1078,9 @@ QTextCodec* QTextCodec::codecForMib(int mib)
#endif
setup();
+ if (!validCodecs())
+ return 0;
+
static QHash <int, QTextCodec *> cache;
if (clearCaches & 0x2) {
cache.clear();
@@ -1100,6 +1128,10 @@ QList<QByteArray> QTextCodec::availableCodecs()
setup();
QList<QByteArray> codecs;
+
+ if (!validCodecs())
+ return codecs;
+
for (int i = 0; i < all->size(); ++i) {
codecs += all->at(i)->name();
codecs += all->at(i)->aliases();
@@ -1138,6 +1170,10 @@ QList<int> QTextCodec::availableMibs()
setup();
QList<int> codecs;
+
+ if (!validCodecs())
+ return codecs;
+
for (int i = 0; i < all->size(); ++i)
codecs += all->at(i)->mibEnum();
@@ -1191,6 +1227,9 @@ void QTextCodec::setCodecForLocale(QTextCodec *c)
QTextCodec* QTextCodec::codecForLocale()
{
+ if (!validCodecs())
+ return 0;
+
if (localeMapper)
return localeMapper;