diff options
author | Liang Qi <liang.qi@qt.io> | 2016-04-29 16:09:54 +0200 |
---|---|---|
committer | Liang Qi <liang.qi@qt.io> | 2016-04-29 17:55:20 +0200 |
commit | b894a8def5d9107663e4968d2d395f5ef3059125 (patch) | |
tree | f894c50c9e5cbdd7ec102291eb94979977ce5b37 /src/corelib/tools/qarraydata.cpp | |
parent | d2304a28ca657634253af26ad803c7f292e6f4cc (diff) | |
parent | 002112e80516a29efbb6cef721d74c5fc39fc19d (diff) |
Merge remote-tracking branch 'origin/5.6' into 5.7
Conflicts:
mkspecs/features/qml_module.prf
mkspecs/features/qt_common.prf
src/gui/text/qzip.cpp
src/plugins/platforms/cocoa/qnsview.mm
src/plugins/platforms/windows/array.h
src/testlib/qtestcase.cpp
src/widgets/dialogs/qfilesystemmodel.h
Change-Id: Ie41c5868415b81f7693c80e045497035504bb210
Diffstat (limited to 'src/corelib/tools/qarraydata.cpp')
-rw-r--r-- | src/corelib/tools/qarraydata.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/corelib/tools/qarraydata.cpp b/src/corelib/tools/qarraydata.cpp index 21ad799e25..bf336a8f31 100644 --- a/src/corelib/tools/qarraydata.cpp +++ b/src/corelib/tools/qarraydata.cpp @@ -38,6 +38,7 @@ ****************************************************************************/ #include <QtCore/qarraydata.h> +#include <QtCore/private/qnumeric_p.h> #include <QtCore/private/qtools_p.h> #include <stdlib.h> @@ -93,16 +94,22 @@ QArrayData *QArrayData::allocate(size_t objectSize, size_t alignment, if (capacity > std::numeric_limits<size_t>::max() / objectSize) return 0; - size_t alloc = objectSize * capacity; + size_t alloc; + if (mul_overflow(objectSize, capacity, &alloc)) + return 0; - // Make sure qAllocMore won't overflow. + // Make sure qAllocMore won't overflow qAllocMore. if (headerSize > size_t(MaxAllocSize) || alloc > size_t(MaxAllocSize) - headerSize) return 0; capacity = qAllocMore(int(alloc), int(headerSize)) / int(objectSize); } - size_t allocSize = headerSize + objectSize * capacity; + size_t allocSize; + if (mul_overflow(objectSize, capacity, &allocSize)) + return 0; + if (add_overflow(allocSize, headerSize, &allocSize)) + return 0; QArrayData *header = static_cast<QArrayData *>(::malloc(allocSize)); if (header) { |