diff options
author | Jonathan Liu <net147@gmail.com> | 2016-09-09 16:12:59 +1000 |
---|---|---|
committer | Martin Jansa <Martin.Jansa@gmail.com> | 2016-09-15 10:09:06 +0200 |
commit | 1d7a6b267452d86995ca4019b495abea3049b63d (patch) | |
tree | f027d8a6012249c2a49d2fb25a8e53742e035c3e /recipes-qt | |
parent | ccae79be69c5268df3b47e4e14cea0591c39a531 (diff) |
qtdeclarative: add upstream patch to fix QtQml crash with GCC 6
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Diffstat (limited to 'recipes-qt')
-rw-r--r-- | recipes-qt/qt5/qtdeclarative/0003-Workaround-crashes-in-QtQml-code-related-to-dead-sto.patch | 44 | ||||
-rw-r--r-- | recipes-qt/qt5/qtdeclarative_git.bb | 1 |
2 files changed, 45 insertions, 0 deletions
diff --git a/recipes-qt/qt5/qtdeclarative/0003-Workaround-crashes-in-QtQml-code-related-to-dead-sto.patch b/recipes-qt/qt5/qtdeclarative/0003-Workaround-crashes-in-QtQml-code-related-to-dead-sto.patch new file mode 100644 index 00000000..d3ee42ef --- /dev/null +++ b/recipes-qt/qt5/qtdeclarative/0003-Workaround-crashes-in-QtQml-code-related-to-dead-sto.patch @@ -0,0 +1,44 @@ +From fcc2c95421710f98c7b2dec73e2c8b0d9164bc9b Mon Sep 17 00:00:00 2001 +From: Jonathan Liu <net147@gmail.com> +Date: Wed, 24 Aug 2016 11:18:37 +1000 +Subject: [PATCH] Workaround crashes in QtQml code related to dead-store + elimination + +When compiled in release mode with GCC 6, QtQml may crash. +This is because the C++ compiler is more aggressive about dead-store +elimination in situations where a memory store to a location precedes +the construction of an object at that memory location. + +The QV4::MemoryManager::allocate{Managed,Object} functions allocate +memory and write to it before the caller does a placement new to +construct an object in the same memory. The compiler considers these +writes before the constructor as "dead stores" and eliminates them. + +The -fno-lifetime-dse compiler flag is added to disable this more +aggressive dead-store eliminiation optimization. + +This is a temporary workaround until a proper solution is found. + +Upstream-Status: Accepted + +Task-number: QTBUG-55482 +Change-Id: I7dbae6e9e613e53ce5fb25957c449bc6657803b5 +Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> +Signed-off-by: Jonathan Liu <net147@gmail.com> +--- + src/qml/qml.pro | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/qml/qml.pro b/src/qml/qml.pro +index f4862a1..651afa6 100644 +--- a/src/qml/qml.pro ++++ b/src/qml/qml.pro +@@ -18,7 +18,7 @@ exists("qqml_enable_gcov") { + + greaterThan(QT_GCC_MAJOR_VERSION, 5) { + # Our code is bad. Temporary workaround. +- QMAKE_CXXFLAGS += -fno-delete-null-pointer-checks ++ QMAKE_CXXFLAGS += -fno-delete-null-pointer-checks -fno-lifetime-dse + } + + QMAKE_DOCS = $$PWD/doc/qtqml.qdocconf diff --git a/recipes-qt/qt5/qtdeclarative_git.bb b/recipes-qt/qt5/qtdeclarative_git.bb index 195ec51a..aabadc0d 100644 --- a/recipes-qt/qt5/qtdeclarative_git.bb +++ b/recipes-qt/qt5/qtdeclarative_git.bb @@ -16,6 +16,7 @@ DEPENDS += "qtbase" SRC_URI += " \ file://0001-qmltestexample-fix-link.patch \ file://0002-qquickviewcomparison-fix-QCoreApplication-has-not-be.patch \ + file://0003-Workaround-crashes-in-QtQml-code-related-to-dead-sto.patch \ " EXTRA_OEMAKE += "QMAKE_SYNCQT=${STAGING_BINDIR_NATIVE}${QT_DIR_NAME}/syncqt" |