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Erik Verbruggen 5ff7a3d96e Add {add,sub,mul}_overflow for signed integers. 
In C++, signed overflow math is Undefined Behavior. However, many CPUs
do implement some way to check for overflow. Some compilers expose
intrinsics to use this functionality. If the no intrinsic is exposed,
overflow checking can be done by widening the result type and "manually"
checking for overflow. Or, for X86, by using inline assembly to use the
CPU features.

Used in QtQml.

Change-Id: I2ef2523ccaa98f6757a45e24862a2fa730a26bb0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2015-11-20 11:08:05 +00:00
bin make a proper header-only module for QtZlib 2015-11-17 20:22:17 +00:00
config.tests Merge remote-tracking branch 'origin/5.6' into dev 2015-11-04 20:18:14 +01:00
dist Update the Qt 5.5.1 changelog for qtbase 2015-09-23 06:49:28 +00:00
doc Doc: Use a navigation separator in the simple offline template 2015-10-28 11:55:05 +00:00
examples Fixed memory leaks in the "40000 chips" example. 2015-11-19 11:30:50 +00:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Merge remote-tracking branch 'origin/5.6' into dev 2015-11-18 09:01:51 +01:00
qmake Merge remote-tracking branch 'origin/5.6' into dev 2015-11-18 09:01:51 +01:00
src Add {add,sub,mul}_overflow for signed integers. 2015-11-20 11:08:05 +00:00
tests Add {add,sub,mul}_overflow for signed integers. 2015-11-20 11:08:05 +00:00
tools Merge remote-tracking branch 'origin/5.6' into dev 2015-11-18 09:01:51 +01:00
util Move CasexTraits from qstring.cpp to qunicodetables_p.h 2015-11-16 14:34:04 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore Remove qtdemo from gitignore 2014-09-17 12:38:55 +02:00
.qmake.conf Merge remote-tracking branch 'origin/5.6' into dev 2015-10-23 14:45:03 +02:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
configure Merge remote-tracking branch 'origin/5.6' into dev 2015-11-18 09:01:51 +01:00
configure.bat Move the official Qt version from qglobal.h to .qmake.conf 2015-10-14 20:12:57 +00:00
header.BSD Updated BSD licensed file headers 2015-02-15 07:41:17 +00:00
header.COMM Add header template for commercial only modules 2015-10-19 10:37:18 +00:00
header.FDL Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL3 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL3-COMM Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL21 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL-ONLY Update copyright headers 2015-02-11 06:49:51 +00:00
INSTALL Doc: Update links in INSTALL file 2015-02-16 09:06:41 +00:00
LGPL_EXCEPTION.txt Update copyright headers 2015-02-11 06:49:51 +00:00
LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
LICENSE.GPLv3 fix up license references 2015-08-13 11:13:09 +00:00
LICENSE.LGPLv3 fix up license references 2015-08-13 11:13:09 +00:00
LICENSE.LGPLv21 Update copyright headers 2015-02-11 06:49:51 +00:00
LICENSE.PREVIEW.COMMERCIAL Update copyright headers 2015-02-11 06:49:51 +00:00
qtbase.pro Merge remote-tracking branch 'origin/5.6' into dev 2015-11-18 09:01:51 +01:00
sync.profile make a proper header-only module for QtZlib 2015-11-17 20:22:17 +00:00