Ensure that the fix in commit af024b6d7e7d3fbef23c1f7d1f7704fc90ac4fb1
works, by replicating what gobject-introspection does:
- initialise the default GTypeInterface from a GType without also
initialising GObjectClass
- install a property for the interface
- find the GParamSpec using g_object_interface_find_property()
Right now, we're assuming that GObjectClass will be initialised first
and under a lock, but that's not always the case: when traversing a list
of type, the first one might be a GTypeInterface, and if we initialise
an interface that installs a property, the whole thing comes crashing
down because the global GParamSpecPool is not initialised.
Instead of taking a lock everywhere, we can use an atomic compare and
swap; the first thread that installs a property wins the race, as any
other access to the GParamSpecPool is performed under a lock.
While GParamSpecPool should never be used by newly written code, having
the ability to free the associated memory is a good idea. The only
reason why this hasn't been necessary until now is that we assume base
classes are going to keep their GParamSpecPool around forever.
Symptom:
20 0x00007ffff756337b in gtk_widget_size_allocate_with_baseline (widget=0xd7a0c0 [DirectWindow], allocation=, baseline=) at
gdb.error: value has been optimized out
Nicks and blurbs don't have any practical use for gio/gobject libraries.
Leaving tests untouched since this features is still used by other libraries.
Closes#2991
Signals (as opposed to signal connections) can never be unregistered, so
these closures have to be around forever.
Fixes some g-ir-scanner warnings.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3037
Boxed types can never be unregistered, so these closures have to be
around forever.
Fixes some g-ir-scanner warnings.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3037
This allows the methods for `GDir` to be introspected. While we don’t
expect languages which use the introspection bindings to use `GDir`,
full introspection support is necessary for the `GDir` documentation to
be correctly built with gi-docgen.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3037
Otherwise the installed one will be used, which will mean that new API
will not be available when linking.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Modify all the similar Python test wrappers to set
`G_DEBUG=fatal-warnings` in the environment of the program being tested,
so we can catch unexpected warnings/criticals.
Adding this because I noticed it was missing, not because I noticed a
warning/critical was being ignored.
Signed-off-by: Philip Withnall <philip@tecnocode.co.uk>
On CHERI-enabled systems we use uintptr_t as the underlying storage for
GType and therefore casting to gsize strips the upper bits from a pointer.
Fix this by casting via uintptr_t instead and introduce a new set of
macros to convert between GType and pointers.
This is required for CHERI systems such as Arm Morello, where gsize is
not large enough to hold a pointer. As GType can contain pointers, we
have to use guintptr instead.
It needs to be in a separate page because it’s all macros and they have
no type/class associated with them.
Signed-off-by: Philip Withnall <philip@tecnocode.co.uk>
Helps: #3037
Currently, the introspection data for GLib and its sub-libraries is
generated by gobject-introspection, to avoid the cyclic dependency
between the two projects.
Since gobject-introspection is generally available on installed systems,
we can check for its presence, and generate the introspection data
directly from GLib.
This does introduce a cyclic dependency, which is why it's possible to
build GLib without introspection, then build gobject-introspection, and
finally rebuild GLib.
By having introspection data available during the GLib build, we can do
things like generating documentation; validating newly added API; and
close the loop between adding new API and it becoming available to non-C
consumers of the C ABI (i.e. language bindings).
Round-tripping pointers via gsize is not guaranteed to work (the C standard
only requires this for (u)inptr_t) and in fact breaks on CHERI-enabled
systems such as Arm Morello where pointers are 128-bits but size_t is 64.
This means the current casts would strip the high bits of the pointer and
return a non-dereferenceable value. Fix this by casting the operand that
holds the pointer to guintptr instead of gsize.
Helps: https://gitlab.gnome.org/GNOME/glib/-/issues/2842
This should not result in any functional changes, but will eventually
allow glib to be functional on CHERI-enabled systems such as Morello.
Helps: https://gitlab.gnome.org/GNOME/glib/-/issues/2842
