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| author | Marc Mutz <marc.mutz@kdab.com> | 2014-10-16 10:39:44 +0200 |
|---|---|---|
| committer | Kai Koehne <kai.koehne@theqtcompany.com> | 2014-10-17 14:56:07 +0200 |
| commit | 45485d9eb47d3129b8a74c2e9d854c07673161cd (patch) | |
| tree | 25920a12522c37d65586d96a2d43c944737ab59d /examples/json/savegame/character.cpp | |
| parent | db069e7f3009075937a772e780df40c63a871999 (diff) | |
Fix undefined behavior in QLoggingRegistry::defaultCategoryFilter()
Report by asan:
READ of size 2 at 0x00000041dd40 thread T0
#0 0x2af097b84da6 in QLoggingRegistry::defaultCategoryFilter(QLoggingCategory*) (lib/libQt5Core.so.5+0x566da6)
#1 0x2af097b8387b in QLoggingRegistry::registerCategory(QLoggingCategory*, QtMsgType) (lib/libQt5Core.so.5+0x56587b)
#2 0x4067f7 in tst_QLogging::QLoggingCategory_categoryName() tests/auto/corelib/io/qloggingcategory/tst_qloggingcategory.cpp:238
<snip>
0x00000041dd41 is located 0 bytes to the right of global variable '*.LC115' defined in 'tests/auto/corelib/io/qloggingcategory/tst_qloggingcategory.cpp' (0x41dd40) of size 1
'*.LC115' is ascii string ''
At face value, memcmp("", "qt", 2) should not return 0, but since
the code invokes undefined behavior, the compiler can do whatever
it wants, including returning 0 here, further proving the fact
that there are *no* benign cases of undefined behavior.
Change-Id: I0c38622c47d1dcea450ea549370be1673b47b18d
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Diffstat (limited to 'examples/json/savegame/character.cpp')
0 files changed, 0 insertions, 0 deletions