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| author | Jason McDonald <jason.mcdonald@nokia.com> | 2010-07-18 03:29:17 (GMT) |
|---|---|---|
| committer | Jason McDonald <jason.mcdonald@nokia.com> | 2010-07-18 03:29:17 (GMT) |
| commit | d8944b560a16db3805d6faadfaadbabe750c0cef (patch) | |
| tree | 8f27e4b4d85307800e2a406482ab08a82775f239 /doc/src/snippets/code/src_gui_image_qimagereader.cpp | |
| parent | 67eaa50ad5ae1543fd165ac6ce29accfcc428036 (diff) | |
| download | Qt-d8944b560a16db3805d6faadfaadbabe750c0cef.zip Qt-d8944b560a16db3805d6faadfaadbabe750c0cef.tar.gz Qt-d8944b560a16db3805d6faadfaadbabe750c0cef.tar.bz2 | |
QUUid::createUuid() should not generate identical sequences on UNIX
An unintended side-effect of commit
90a082c9076f35dcca092ade019891e92692710e is that if qrand() is used
without being seeded first, then createUuid() would always generate the
same sequence. This quite likely to happen considering the Qt does not
actually seed the PRNG, but does use it in many places (we do not call
qsrand(), but we do often call qrand()).
Fix this by changing qrand() to calculate a seed, instead of defaulting to
1. This allows us to remove the qsrand() overload with no arguments, since
qrand() will now seed automatically unless manually seeded by the programmer.
Task-number: QTBUG-11213
Reviewed-by: thiago
(manually cherry picked from commits
2ef8b92ececbf9d33d7c0b44f46c7c975fb0fdaa and
a0fffeed6fceb8244328b649a3f6feb520493bc2)
Conflicts:
src/corelib/plugin/quuid.cpp
Diffstat (limited to 'doc/src/snippets/code/src_gui_image_qimagereader.cpp')
0 files changed, 0 insertions, 0 deletions