diff options
author | Bradley T. Hughes <bradley.hughes@nokia.com> | 2011-10-03 15:21:02 +0200 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2011-10-04 11:21:25 +0200 |
commit | 992a37234c5ec7494fc2f24217d36400f6c1630a (patch) | |
tree | e3bf0adbcb0dfa81ef950de7012d7e078d434bf1 /src/corelib/tools | |
parent | 22948130e878903bd9b98b8c031bce7dc07d7a95 (diff) |
Don't crash by modifying read-only shared_null
Functions that modify the d-pointer must detach or otherwise take
measures to not modify the const, read-only shared_null.
The setSharable(bool) function takes care to detach when setting
sharable to false, but should avoid setting the sharable data member
unless d is not the shared null.
Similarly, QMap<Key, T>::setInsertInOrder() needs to detach if it is
shared with the shared_null (the logic has been updated to be the same
as setSharable()).
Change-Id: Ida5cb9818b86695f1b9f0264418b955c56424898
Reviewed-on: http://codereview.qt-project.org/5929
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>
Diffstat (limited to 'src/corelib/tools')
-rw-r--r-- | src/corelib/tools/qhash.h | 2 | ||||
-rw-r--r-- | src/corelib/tools/qlinkedlist.h | 2 | ||||
-rw-r--r-- | src/corelib/tools/qlist.h | 2 | ||||
-rw-r--r-- | src/corelib/tools/qmap.h | 4 | ||||
-rw-r--r-- | src/corelib/tools/qvector.h | 2 |
5 files changed, 6 insertions, 6 deletions
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h index 25cece4673..cc120aa09e 100644 --- a/src/corelib/tools/qhash.h +++ b/src/corelib/tools/qhash.h @@ -291,7 +291,7 @@ public: inline void detach() { if (d->ref != 1) detach_helper(); } inline bool isDetached() const { return d->ref == 1; } - inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } + inline void setSharable(bool sharable) { if (!sharable) detach(); if (d != &QHashData::shared_null) d->sharable = sharable; } inline bool isSharedWith(const QHash<Key, T> &other) const { return d == other.d; } void clear(); diff --git a/src/corelib/tools/qlinkedlist.h b/src/corelib/tools/qlinkedlist.h index bcad210d30..36cbc68eb8 100644 --- a/src/corelib/tools/qlinkedlist.h +++ b/src/corelib/tools/qlinkedlist.h @@ -97,7 +97,7 @@ public: inline void detach() { if (d->ref != 1) detach_helper(); } inline bool isDetached() const { return d->ref == 1; } - inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } + inline void setSharable(bool sharable) { if (!sharable) detach(); if (d != &QLinkedListData::shared_null) d->sharable = sharable; } inline bool isSharedWith(const QLinkedList<T> &other) const { return d == other.d; } inline bool isEmpty() const { return d->size == 0; } diff --git a/src/corelib/tools/qlist.h b/src/corelib/tools/qlist.h index e9e44dbb10..5c8a58a196 100644 --- a/src/corelib/tools/qlist.h +++ b/src/corelib/tools/qlist.h @@ -143,7 +143,7 @@ public: } inline bool isDetached() const { return d->ref == 1; } - inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } + inline void setSharable(bool sharable) { if (!sharable) detach(); if (d != &QListData::shared_null) d->sharable = sharable; } inline bool isSharedWith(const QList<T> &other) const { return d == other.d; } inline bool isEmpty() const { return p.isEmpty(); } diff --git a/src/corelib/tools/qmap.h b/src/corelib/tools/qmap.h index ff181d5071..8beae03a6e 100644 --- a/src/corelib/tools/qmap.h +++ b/src/corelib/tools/qmap.h @@ -204,9 +204,9 @@ public: inline void detach() { if (d->ref != 1) detach_helper(); } inline bool isDetached() const { return d->ref == 1; } - inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } + inline void setSharable(bool sharable) { if (!sharable) detach(); if (d != &QMapData::shared_null) d->sharable = sharable; } inline bool isSharedWith(const QMap<Key, T> &other) const { return d == other.d; } - inline void setInsertInOrder(bool ordered) { d->insertInOrder = ordered; } + inline void setInsertInOrder(bool ordered) { if (ordered) detach(); if (d != &QMapData::shared_null) d->insertInOrder = ordered; } void clear(); diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h index 34d1ed3717..eab9311eb3 100644 --- a/src/corelib/tools/qvector.h +++ b/src/corelib/tools/qvector.h @@ -146,7 +146,7 @@ public: inline void detach() { if (d->ref != 1) detach_helper(); } inline bool isDetached() const { return d->ref == 1; } - inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } + inline void setSharable(bool sharable) { if (!sharable) detach(); if (d != &QVectorData::shared_null) d->sharable = sharable; } inline bool isSharedWith(const QVector<T> &other) const { return d == other.d; } inline T *data() { detach(); return p->array; } |