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Use QtPrivate::FunctionPointer to get the type of srand's first arg

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Avoids #ifdefs and guesswork.

Change-Id: Icd0e0d4b27cb4e5eb892fffd14b5210efaea7d00
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This commit is contained in:
Thiago Macieira 2017-04-13 18:59:59 -07:00
parent 030782e1a8
commit 7697227781
1 changed files with 2 additions and 7 deletions
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9
src/corelib/global/qrandom.cpp
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@ -42,6 +42,7 @@
#include "qrandom.h"
#include "qrandom_p.h"
#include <qobjectdefs.h>
#include <qthreadstorage.h>
#if QT_HAS_INCLUDE(<random>)
@ -730,13 +731,7 @@ void QRandomGenerator::fillRange_helper(void *buffer, void *bufferEnd)
}
#if defined(Q_OS_UNIX) && !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0)
# if defined(Q_OS_INTEGRITY) && defined(__GHS_VERSION_NUMBER) && (__GHS_VERSION_NUMBER < 500)
// older versions of INTEGRITY used a long instead of a uint for the seed.
typedef long SeedStorageType;
# else
typedef uint SeedStorageType;
# endif
using SeedStorageType = QtPrivate::FunctionPointer<decltype(&srand)>::Arguments::Car;
typedef QThreadStorage<SeedStorageType *> SeedStorage;
Q_GLOBAL_STATIC(SeedStorage, randTLS) // Thread Local Storage for seed value