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Marc Mutz 5cc0de2e08 QAtomic: pass explicit failure memory order to std::atomic::compare_exchange_strong 
GCC 4.8 seems to get the failure memory order wrong when using the
overload that only accepts one memory order and produces errors such
as:

  bits/atomic_base.h:577:70: error: failure memory model cannot be stronger than success memory model for '__atomic_compare_exchange'
  return __atomic_compare_exchange_n(&_M_i, &__i1, __i2, 0, __m1, __m2);
                                                                      ^
(as seen on Android).

Fix by explicitly passing the failure orders corresponding to the
success orders, as specified by the standard:

 relaxed → relaxed
 release → relaxed
 acquire → acquire
 acq_rel → acquire

(cf. http://en.cppreference.com/w/cpp/atomic/atomic/compare_exchange).

Task-number: QTBUG-59399
Change-Id: If046e735888cf331d2d6506d8d5ca9aa7402f9ad
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2017-03-10 08:24:41 +00:00
bin don't include injected headers into linker version script 2016-10-14 09:00:29 +00:00
config.tests remove unused Xlib's XRender dependency 2017-02-24 19:42:21 +00:00
dist Add changes file for 5.8.0 2017-01-02 06:50:47 +00:00
doc Doc: Add macro for embedding YouTube videos 2017-03-06 13:43:58 +00:00
examples Example: migrate treemodelcompleter example to use QRegularExpression 2017-03-07 23:11:31 +00:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Add -Wfloat-equal to Qt's header clean check 2017-03-07 10:51:54 +00:00
qmake qmake: Check for QT_CONFIG(process) in qmakebuiltins 2017-03-06 14:16:08 +00:00
src QAtomic: pass explicit failure memory order to std::atomic::compare_exchange_strong 2017-03-10 08:24:41 +00:00
tests Stop trying to discover the system timer resolution on Windows 2017-03-08 05:52:47 +00:00
util Handle indirect sibling selector 2016-07-27 20:18:02 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore Update .gitignore 2017-01-18 10:58:02 +00:00
.qmake.conf Bump version 2017-01-03 13:25:46 +01:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
config_help.txt configure: generalize command line overrides of library parameters 2017-02-22 07:46:25 +00:00
configure complain about various invalid configuration attempts 2017-01-06 20:10:10 +00:00
configure.bat reduce nesting in configure.bat 2017-01-10 12:44:21 +00:00
configure.json Output "qml-debug" as privateFeature 2017-02-23 14:11:54 +00:00
configure.pri make an effort to keep /src properties constant 2017-02-24 16:39:46 +00:00
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INSTALL Doc: Update links in INSTALL file 2015-02-16 09:06:41 +00:00
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LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
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qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile fix generation of QSql header 2017-02-24 16:39:50 +00:00