Pino Toscano [Sun, 2 Aug 2020 08:49:03 +0000 (09:49 +0100)]
Limit Linux-only code with Q_OS_LINUX
Forwarded: no
Last-Update: 2020-04-19
The QStorageInfo/QStorageIterator implementation used for Linux is used also
on Hurd, as it uses an interface provided by GNU libc.
QStorageIterator::device() tries to use PATH_MAX (unavailable on the Hurd)
to lookup a /dev/block/ path, which exists on Linux only; hence, perform that
check within a Q_OS_LINUX block.
This code makes Lintian unhappy. But we are really not using it, it only
gets inserted when building the online doc.
Anyways the best way to calm down Lintian is to simply remove it.
When including files, moc inserts a MOC_INCLUDE_BEGIN and
MOC_INCLUDE_END token into the token stream. Those are already handled
in the toplevel Moc::parse function, but parseEnum lacked support so
far.
Commit ae6f73e8566fa76470937aca737141183929a5ec inserted a mutex around
the entire load_sys(). We had reasoned that deadlocks would only occur if
the object creation in instance() recursed into its own instance(),
which was already a bug. But we had forgotten that dlopen()/
LoadLibrary() executes initialization code from the module being loaded,
which could cause a recursion back into the same QPluginLoader or
QLibrary object. This recursion is benign because the module *is* loaded
and dlopen()/LoadLibrary() returns the same handle.
Otherwise accessibility would only work when Orca is set to be started
in the session preference, and it would not work when running Orca or
compiz' zoom by hand.
The existing comment said that it was always true since gnome 3.6, but at
least in Debian 8's gnome 3.14, Debian 9's gnome 3.22, and Debian 10's
3.30 it is not always true, it is Orca which sets it on startup. Compiz's
focuspoll module also does so for people with low vision using zoom with
focus tracking.
Recursively defined entities can easily exhaust all available
memory. Limit entity expansion to a default of 4096 characters to
avoid DoS attacks when a user loads untrusted content.
Added a setter and getter to allow modifying the expansion limit.
QXmlStreamReader does now by default limit the expansion of entities
to 4096 characters. Documents where a single entity expands to more
characters than the limit are not considered well formed. The limit
is there to avoid DoS attacks through recursively expanding entities
when loading untrusted content. The limit can be changed through the
QXmlStreamReader::setEntityExpansionLimit() method.
* Backport upstream patch for moc to handle include directives in enums
(closes: #963955).
* Stop using -isystem flag in qmake (closes: #958479).
* Clarify warning message about PIC/PIE, thanks Daniel Kahn Gillmor
(closes: #879014).
* Update symbols files for GCC 10.
* Update libqt5gui5.lintian-overrides for tag renames in Lintian 2.79.
projects / qtbase-opensource-src.git / log