Previously we were only detecting typedef\*senum\s*\{, which does not
handle the case where there is an entifier for the enum itself but
not the typedef. glib-mkenums would then attempt to read the next line
looking for a matching {, but in vain.
https://bugzilla.gnome.org/show_bug.cgi?id=794506
It’s defined in gutils.h, but various users of GLib might not have
access to that.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Reviewed-by: nobody
https://bugzilla.gnome.org/show_bug.cgi?id=793272
The *_init() functions have prototypes incompatible with *InitFunc types they
are being cast to. This upsets GCC 8's -Wcast-function-type that's enabled by
default with -Wextra.
Let's not have the public header files emit a warning and neutralize it by
doing a void(*)(void) cast first.
https://bugzilla.gnome.org/show_bug.cgi?id=793272
It's not possible to subclass GValue, and by always explicitly casting
here it is easy to write broken code (e.g. passing a GValue**) without
the compiler warning about that.
By not casting, the compiler will error out if anything but a GValue* is
passed here.
https://bugzilla.gnome.org/show_bug.cgi?id=793186
gtk-doc doesn’t support them any more since it was ported to Markdown,
so they end up appearing in the generated documentation, which isn’t
great.
Mostly, they were used to split up things invisibly, which we can do in
other ways.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Reviewed-by: nobody
Properly define GLIB/GOBJECT_STATIC_COMPILATION when static build is enabled.
Use library() instead of shared_library() to allow selecting static builds.
https://bugzilla.gnome.org/show_bug.cgi?id=784995
This makes easier to write a module that can be both dynamic and static.
It will allow to statically build modules from glib-networking, for
example.
A module can rename its g_io_module_load() function to
g_io_<modulename>_load(), and then an application which links statically
against that module can call g_io_<modulename>_load(NULL) to register
types and extension points from the module. If a module is loaded
dynamically, its load() function will continue to be called with a
non-NULL GIOModule instance.
https://bugzilla.gnome.org/show_bug.cgi?id=684282
This is for destroying resources needed by transformations. But the user
may not need any such resources. Make it obvious that, instead of having
to point to a no-op function, @notify is checked and not called if NULL.
https://bugzilla.gnome.org/show_bug.cgi?id=792098
Weak-pointers are currently lacking g_set_object() & g_clear_object()
helpers equivalent. New functions (and macros, both are provided) are
convenient in many case, especially for the property's notify-on-set
pattern:
if (g_set_weak_pointer (...))
g_object_notify (...)
Inspired by Christian Hergert's original implementation for
gnome-builder.
https://bugzilla.gnome.org/show_bug.cgi?id=749527
Conceptually, these functions clearly ought to be fine for a const
structure. This avoids _G_TYPE_CVH (the implementation of
G_TYPE_CHECK_VALUE_TYPE, G_VALUE_HOLDS, G_VALUE_HOLDS_BOXED etc.)
needing to cast to a mutable GValue, which causes
G_VALUE_HOLDS (cv, type) to issue warnings under gcc -Wcast-qual if
cv is a const GValue *.
https://bugzilla.gnome.org/show_bug.cgi?id=734479
Some source files aren't valid utf-8 containing for example
iso8859-1 accented characters in author's names.
Replace invalid data with a replacement '?' character and print a
warning to keep things working.
Based on a patch from Christoph Reiter in
https://bugzilla.gnome.org/show_bug.cgi?id=785113#c20
The type propagation breaks the GRefPtr.h class in WebKitGTK, and in
any case existing C++ code calling the C API will need to perform an
explicit cast, as there's no automatic promotion of pointer types to
and from void*.
Tested-by: GNOME Continuous
https://bugzilla.gnome.org/show_bug.cgi?id=790697
When compiling code that includes gobject.h using GCC with the ISO
standard, the `typeof` keyword is disabled, as it's a GCC extension.
The GCC documentation recommends:
> If you are writing a header file that must work when included in
> ISO C programs, write __typeof__ instead of typeof.
Which is precisely what we're going to do.
Signed-off-by: Emmanuele Bassi <ebassi@gnome.org>
Reviewed-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=790697
Currently, g_object_ref() and g_object_ref_sink() return a
gpointer which can mask issues when assigning to fields or
returning from a function.
To help catch these type of programming errors, we can propagate
the type of the parameter through the function call on GCC
using the typeof() C language extension.
This will cause offending code to have a warning, but will
continue to be source and binary compatible.
This is only enabled when GLIB_VERSION_MAX_ALLOWED is 2.56 or greater.
https://bugzilla.gnome.org/show_bug.cgi?id=790697
Putting a <!-- --> in plural<!-- -->s was an old hack used to fix
linking the symbol with gtk-doc when gtk-doc didn’t know about plural
forms. gtk-doc does now know about plural forms, so the hack can be
removed.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
It's theoretically possible that we could have a case where this would
actually return NULL, but it's difficult to imagine a valid program that
would contain such a case.
Add an explicit assert here to quiet up static analysis.
See the bug for more discussion.
Coverity CID: 1159477
https://bugzilla.gnome.org/show_bug.cgi?id=730296
Where we were already treating GHashTables as sets, modify them to use
the set-specific APIs g_hash_table_add() and g_hash_table_contains(), to
make that usage more obvious and less prone to being broken.
Heavily based on patches by Garrett Regier <garrettregier@gmail.com>.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=749371
Clarify the licensing of the code generated by the two scripts in a
comment in the header of each generated file. The intention is that the
license of GLib does *not* apply to the generated files; but that they
are subject to the linking restrictions of the LGPL, since they link to
GLib and GLib is licensed under the LGPL. The generated files themselves
are under the license of whatever project they’re generated for.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788990
We should ensure a stable order when processing the files, regardless of
the order they were submitted on the command line, to increase the
chances of a reproducible build.
The old Perl-based version of glib-mkenums was fixed in commit 8686e430
to do the same.
https://bugzilla.gnome.org/show_bug.cgi?id=691436
The fallback code for providing a default comment template only worked
if a template file was provided. It didn’t work if individual templates
were provided on the command line (and --comment wasn’t).
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788990
They return floating references. The convention established by GVariant
is to annotate these as (transfer none) so that the caller does a
ref+sink on them, rather than just a ref.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=677233
The m4 and bash completion items are usable and relevant
depending on the host system's configuration. So, we check for the
presence of the programs that these items depend on, and only install
them when those programs are found.
For the Valgrind suppression files, we don't install them on Windows as
Valgrind is currently not supported on Windows.
Als fix the path where the GDB helpers are installed, as the path is
incorrectly constructed.
This will fix the "install" stage when building on Visual Studio at
least as there are some post-install steps that are related to them,
which will make use of these programs.
https://bugzilla.gnome.org/show_bug.cgi?id=783270
This was duplicated also in g_object_interface_install_property().
Now, validations specific to classes happen in
validate_and_install_class_property() - specifically, the checks for
the presence of the get_property() and set_property() methods.
https://bugzilla.gnome.org/show_bug.cgi?id=787551
Commit 31ae2c5598 added the C++ guards
around all prototypes, including inside the header file. The header
file, though, already has C++ guards, so while it's harmless to have
them there, it's also unnecessary.
We should only emit C++ guards around the prototypes we include in the
generated source.
Since --header --body has been deprecated and replaced with --body
--prototypes, the generated body is not wrapped with G_{BEGIN,END}_DECLS
any longer. Projects using C++ break due to that. Automatically wrap
prototypes individually in G_{BEGIN,END}_DECLS instead.
https://bugzilla.gnome.org/show_bug.cgi?id=785554
In case of Python 2 and stdout being redirected to a file, sys.stdout.encoding
is None and it defaults ASCII for encoding text.
To match the behaviour of Python 3, which uses the locale encoding also when
redirecting to a file, wrap sys.stdout with a StreamWriter using the
locale encoding.
https://bugzilla.gnome.org/show_bug.cgi?id=785113
Instead of using NamedTemporaryFile, which doesn't take an encoding in Python 2
use mkstemp() to create a file and open it with io.open(), with a proper
encoding set.
https://bugzilla.gnome.org/show_bug.cgi?id=785113
On Windows open() defaults to ANSI and on Python 2 it doesn't take
an encoding. Use io.open() instead which provides the same interface
on both Python versions.
https://bugzilla.gnome.org/show_bug.cgi?id=785113
The Meson build has fallen a bit behind the Autotools one, when it comes
to the internally built tools like glib-mkenums and glib-genmarshals.
We don't need to generate gmarshal.strings any more, and since the
glib-genmarshal tool is now written in Python it can also be used when
cross-compiling, and without indirection, just like we use glib-mkenums.
We can also coalesce various rules into a simple array iteration, with
minimal changes to glib-mkenums, thus making the build a bit more
resilient and without unnecessary duplication.
The old glib-mkenums was more forgiving, and simply ignored any files it
could not find.
We're going to print a warning, as in the future we may want to allow
more strictness.
This is a bit of a hack to maintain some semblance of backward
compatibility with the old, Perl-based glib-mkenums. The old tool had an
implicit ordering on the arguments and templates; each argument was
parsed in order, and all the strings appended. This allowed developers
to write:
glib-mkenums \
--fhead ... \
--template a-template-file.c.in \
--ftail ...
And have the fhead be prepended to the file-head stanza in the template,
as well as the ftail be appended to the file-tail stanza in the
template. Short of throwing away ArgumentParser and going over
sys.argv[] element by element, we can simulate that behaviour by
ensuring some ordering in how we build the template strings:
- the head stanzas are always prepended to the template
- the prod stanzas are always appended to the template
- the tail stanzas are always appended to the template
Within each instance of the command line argument, we append each value
to the array in the order in which it appears on the command line.
This change fixes the libqmi build.
Some of the arguments that affect the generated result in glib-mkenums
can be used multiple times, to avoid embedding unnecessary newlines in
their values.
This change fixes the NetworkManager build.
When using the `--header --body` compatibility mode, we need to emit
things we generally define in the header, such as the aliases for
standard marshallers, and aliases for deprecated tokens.
This fixes dbus-binding-tool, which is using `--header --body` and
deprecated tokens.
See: https://bugs.freedesktop.org/show_bug.cgi?id=101799
Fixes get_type function generation for:
- GMountMountFlags
- GDriveStartFlags
- GResourceLookupFlags
- GSocketMsgFlags
- GTlsDatabaseVerifyFlags
- GTestDBusFlags
which were registered as enum types before, which broke
some unit tests.
Problem is that the flags annotation has no value, so
options.get('flags') would always return None even if
it was present.
https://bugzilla.gnome.org/show_bug.cgi?id=779332
This reduces the build-time dependencies of glib to only Python 3,
Meson, and git. Git is also optional if you provide a tarball in
which the subproject directories already exist.
The Python port was done by Jussi Pakkanen on bugzilla:
https://bugzilla.gnome.org/show_bug.cgi?id=779332
This version contains some fixes from that and also changes all
instances of `@` to `\u0040` because Meson does not yet provide a
configure_file() mode that ignores unknown @MACRO@ values.
This is a stub-only library that can be used while building against
MSVC and contains no i18n machinery at all.
The dependencies added indirectly use the libintl.h header, and when
built as a subproject, the header won't be in a path known the
pre-processor.
Don't use it project-wide for building everything. Otherwise
symbols for shared modules won't be exposed, e.g. in the
resourceplugin used by the gio resource unit test.
Disable gio tests on Windows, fix .gitignore to not ignore
config.h.meson, and add more things to it.
Rename the library file naming and versioning to match what Autotools
outputs, e.g., libglib-2.0.so.0.5000.2 on Linux, libglib-2.0-0.dll and
glib-2.0-0.dll on Windows with MSVC.
Several more tiny fixes, more executables built and installed, install
pkg-config and m4 files, fix building of gobject tests.
Changes to gdbus-codegen to support out-of-tree builds without
environment variables set (which you can't in Meson). We now add the
build directory to the Python module search path.
We're in the process or rewriting other tools in Python to reduce the
number of dependencies of GLib.
Additionally, making glib-genmarshal a Python script reduces the
complexity when cross-compiling, as we don't need a native build to
generate the marshallers.
https://bugzilla.gnome.org/show_bug.cgi?id=784528
It is possible, when using GTK-Doc, to mark sections of an enumeration
type as "private": the values are there, but they are not documented,
and GTK-Doc won't complain about missing symbols:
typedef enum {
/*< private >*/
MY_FOO_PRIVATE,
/*< public >*/
MY_FOO_VALUE_A,
MY_FOO_VALUE_B,
/*< private >*/
MY_FOO_VALUE_C,
MY_FOO_VALUE_D
} MyFooValue;
The glib-mkenums parser also allows skipping enumeration values, using a
slightly different syntax:
typedef enum P
MY_BAR_PRIVATE, /*< skip >*/
MY_BAR_VALUE_A,
MY_BAR_VALUE_B
} MyBarValue;
The annotation must sit on the same line as the enumeration value.
Both GTK-Doc and glib-mkenum use the same trigraph syntax, but slightly
different keys. This makes combining them slightly redundant, but
feasible.
All would be well and good, except that glib-mkenum will generate a
warning for lines it does not understand — and that includes the GTK-Doc
annotation trigraph, which, when confronted with the MyFooValue
enumeration above, will result in a warning like:
glib-mkenums: myfoo.h:2: Failed to parse ` /*< private >*/ '
glib-mkenums: myfoo.h:5: Failed to parse ` /*< public >*/ '
glib-mkenums: myfoo.h:9: Failed to parse ` /*< private >*/ '
Of course, we could make glib-mkenum ignore any trigraph comment on a
stand alone line, but it would probably be better to ensure that both
glib-mkenums and gtk-doc behave consistently with each other, and
especially with the maintainer's intent of hiding some values from the
user, and reserving them for internal use.
So we should ensure that glib-mkenums automatically skips all the
enumeration values after a "private" flag has been set, until it reaches
a "public" stanza.
https://bugzilla.gnome.org/show_bug.cgi?id=782162
This way code that does not manually include the generated marshallers
header and wishes to build with `-Wmissing-prototypes` will not generate
a compiler warning.
https://bugzilla.gnome.org/show_bug.cgi?id=781755
It's unnecessary, and only adds visual noise; we have been fairly
inconsistent in the past, but the semi-colon-less version clearly
dominates in the code base.
https://bugzilla.gnome.org/show_bug.cgi?id=669355
This is going to be checked again by g_object_new_with_properties()
and g_object_new_valist() anyway, so might just as well leave it
to those functions to do the check and only do it once. It doesn't
matter which function emits the critical warning in the end either,
as one has to look at a stack trace to find out what code triggered
it in any case.
https://bugzilla.gnome.org/show_bug.cgi?id=780908
g_object_newv uses a GParameter as argument. Since GParameter
is deprecated due to this type is not introspectible,
g_object_newv is deprecated now.
https://bugzilla.gnome.org/show_bug.cgi?id=709865
g_object_new_with_properties is an alternative to g_object_newv.
The last one, takes an array of GParameter. However, GParameter
is a rarely used type and this type is not introspectible, so
it will not work properly in bindings.
https://bugzilla.gnome.org/show_bug.cgi?id=709865
They do not start with the #!/usr/bin/python that would be necessary
to make them run with Python rather than a shell, and they would
not be useful to run anyway: they are libraries to be imported,
not scripts to be run.
Signed-off-by: Simon McVittie <smcv@debian.org>
It was suggested that the project files be moved here as we don't actually
need to go two directory layers from $(srcroot), and would help us to
standardize on things in the future across the board.
The macros differ in their handling of NULL values — some macros ignore
them and pass through (e.g. G_TYPE_CHECK_INSTANCE_CAST) while others
will explicitly emit a warning if passed NULL (e.g.
G_TYPE_CHECK_INSTANCE).
Document their behaviour, so people don’t end up putting unnecessary
NULL checks in their code when doing checked type casts.
https://bugzilla.gnome.org/show_bug.cgi?id=735731
glibc string.h declares memcpy() with attribute(nonnull(1,2)), causing
calls with NULL arguments to be treated as undefined behaviour.
This is consistent with ISO C99 and C11, which state that passing 0
to string functions as an array length does not remove the requirement
that the pointer to the array is a valid pointer.
gcc -fsanitize=undefined catches this while running OSTree's test suite.
Similarly, running the GLib test suite reports similar issues for
qsort(), memmove(), memcmp().
Signed-off-by: Simon McVittie <smcv@debian.org>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=775510
Reviewed-by: Colin Walters
global variables in SystemTap are shared between all SystemTap scripts;
so if scripts are loaded for two versions of GLib (for example, a stable
and a development version), those global variables will conflict.
Avoid that by including the soname’s version in the global variable
names.
https://bugzilla.gnome.org/show_bug.cgi?id=770646
If we have an input parameter (or return value) we need to use (nullable).
However, if it is an (inout) or (out) parameter, (optional) is sufficient.
It looks like (nullable) could be used for everything according to the
Annotation documentation, but (optional) is more specific.
gtk-doc doesn’t make the return type clear, because these are macros
rather than inline functions, so people often have to guess at the
return type (or look it up from g_signal_connect_closure(), but that’s
hard work).
Make it clear that the return type for handler IDs is gulong. While
there, fix the capitalisation of ‘id’ to ‘ID’ in a few places.
At some point, upstream SystemTap changed from using a
STAP_HAS_SEMAPHORES preprocessor variable for this, to using
_SDT_HAS_SEMAPHORES instead. We need to update our build system to
disable that as well.
The original discussion about use of semaphores is here:
https://bugzilla.gnome.org/show_bug.cgi?id=606044
This was breaking the build with -flto enabled, either because -flto
doesn’t work with semaphores.
https://bugzilla.gnome.org/show_bug.cgi?id=768198
The C spec leaves conditional evaluation inside a macro expansion as
undefined behaviour. This means we cannot use constructs like:
GOBJECT_IF_DEBUG(OBJECTS, {
...
#ifdef BLAH
...
#endif
...});
Because compilers are entirely justified to ignore the conditional, or,
like in the case of MSVC, error out.
https://bugzilla.gnome.org/show_bug.cgi?id=769504
historically, DEBUG_CODE(gtype.c) and IF_DEBUG(gobject.c, gsignal.c)
macros are used to support debugging messages about object bookkeeping
and signal emission.
DEBUG_CODE has never been used in gtype.c. IF_DEBUG, when used, must be
accompanied by an extra #ifdef G_ENABLE_DEBUG. this is cumbersome.
this patch add a new macro GOBJECT_IF_DEBUG based on DEBUG_CODE as
a replacement for both DEBUG_CODE and IF_DEBUG.
https://bugzilla.gnome.org/show_bug.cgi?id=729914
In a vague attempt at ensuring the .stp scripts can be closely
associated with the .so files which they hard-code references to, rename
the scripts so they include the LT version — so that they are the .so
file name plus .stp.
This does not fix the fact that our .stp scripts will not work on
multiarch systems, as they are installed in an architecture-independent
directory (/usr/share/systemtap/tapset). At the moment, it is
recommended that any distribution who package the .stp files should
install them in the architecture-specific subdirectories of this (for
example, /usr/share/systemtap/tapset/x86-64).
A better long-term solution for this is under discussion upstream:
https://sourceware.org/bugzilla/show_bug.cgi?id=20264https://bugzilla.gnome.org/show_bug.cgi?id=662802
The ability to pass libtool via $(CC) to dtrace and have it respect this
appears to be a feature that is only present in the systemtap version of
the tool. In particular, FreeBSD (which seems to be using a copy of the
tool from Solaris) doesn't support this.
The result is that, with $(CC) ignored, and a .lo file specified in -o,
we get an ELF written to the .lo.
Instead of trying to have dtrace run libtool we can have libtool run
dtrace. dtrace is really just a compiler that produces an object file
here, and it even understands -o, so libtool can make the appropriate
adjustments.
There appears to be some prior art for this approach. A quick search
shows that at least QEMU is using this approach. It also appears to
work on Linux with systemtap's dtrace and on FreeBSD.
This may regress cross-compilation because the dtrace command will have
no way of knowing which compiler we intend for it to use to produce the
object file. I say "may" because I don't know if dtrace ever worked in
the first place under cross-compilation.
https://bugzilla.gnome.org/show_bug.cgi?id=725902
Some compilers have trouble with such sequences. Visual C++ may or may
not generate a warning in this particular case depending on if the
local code page supports an ellipsis.
https://bugzilla.gnome.org/show_bug.cgi?id=767218
glib installs a gdb helper file named `glib.py`.
Then the "hook" file updates `sys.path` and does `import glib`.
This will fail if glib has already been imported into gdb, say
using `from gi.repository import GLib`. This is due to a namespace clash.
One fix would be to rename the gdb helper files to not clash with
other Python modules. This should be done for all such helper files.
https://bugzilla.gnome.org/show_bug.cgi?id=760186
v_long is 32 bits on Win64, v_pointer is 64 bits. On most other platforms the
size of long and pointer is the same, so it's usually not a problem.
https://bugzilla.gnome.org/show_bug.cgi?id=758738
Rather than calculating it at configure time. This means it can expand
$libdir properly, and use the Make $(realpath) function rather than
invoking the non-portable `readlink -f`.
This fixes problems where `readlink` would be called on an invalid path
(due to a variable not being expanded) and would evaluate to "", which
would then cause things to be installed in the wrong place.
https://bugzilla.gnome.org/show_bug.cgi?id=744772
This reverts commit a3a9664ed2.
Constifying the autogenerated get_instance_private functio makes C++
compilers and GCC with -Wcast-qual warn during compilation of GLib and
projects depending on GLib.
Since using const with GObject instances is not a common coding
practice, it's better to revert than trying to make every sigle GType
function const-safe (and possibly add more compiler warnings in the
process).
https://bugzilla.gnome.org/show_bug.cgi?id=745068
This reverts commit 52f23db74a.
Constifying these macros make C++ compilers and GCC with -Wcast-qual
warn during compilation of GLib and projects depending on GLib.
Since using const with GObject instances is not a common coding
practice, it's better to revert than trying to make every sigle GType
function const-safe (and possibly add more compiler warnings in the
process).
https://bugzilla.gnome.org/show_bug.cgi?id=745068
Add ref-func, unref-func, set-value-func, and get-value-func annotations to
GParamSpec so that it can be managed generically as a fundamental type with
introspection.
https://bugzilla.gnome.org/show_bug.cgi?id=710243
Add various (nullable) and (optional) annotations which were missing
from a variety of functions. Also port a couple of existing (allow-none)
annotations in the same files to use (nullable) and (optional) as
appropriate instead.
Secondly, add various (not nullable) annotations as needed by the new
default in gobject-introspection of marking gpointers as (nullable). See
https://bugzilla.gnome.org/show_bug.cgi?id=729660.
This includes adding some stub documentation comments for the
assertion macro error functions, which weren’t previously documented.
The new comments are purely to allow for annotations, and hence are
marked as (skip) to prevent the symbols appearing in the GIR file.
https://bugzilla.gnome.org/show_bug.cgi?id=719966
Now that we initialize the quark tables from a constructor,
reloading libglib is just as bad as reloading libgobject,
so add the linker option to the LDFLAGS for all our libraries.
https://bugzilla.gnome.org/show_bug.cgi?id=755609
It seems that VS 2015 optimizes out the constructor on windows,
so it is better to use a DllMain to initialize the library
and keep using a normal constructor on the other platforms.
This research was done by Arnav Singh.
https://bugzilla.gnome.org/show_bug.cgi?id=752837
If --prefix is specified, marshaller_prefix is allocated and never
freed. It does not actually have to be allocated — just use the static
string from argv.
Coverity CID: 1325370
This reverts commit 8e362161d9.
There is a fundamental difference between g_value_peek_pointer() and
g_value_get_pointer(), and it's not just complexity: the latter checks
if the GValue holds a pointer type, whereas the former doesn't.
https://bugzilla.gnome.org/show_bug.cgi?id=755922
g_value_unset() only works with initialized value and will assert
if the GValue is zero-filled (or initialized with G_VALUE_INIT). Document
this behaviour and refer to g_value_clear() for a method that work on
both initialized and zero-filled GValue.
https://bugzilla.gnome.org/show_bug.cgi?id=755766
This change allow leaving a scope before g_value_init() has been
called. This would happen if you do:
{
g_auto(GValue) value = G_VALUE_INIT;
}
Or have a return statement (due to failure) before the part of
your code where you set this GValue.
https://bugzilla.gnome.org/show_bug.cgi?id=755766
This will not catch the case where we fail in libffi and always use 0.
In fact, be a real annoying person and use (1 << 31) as a flags value to
test signedness, too.
Also update the testcase to actually use flags everywhere and ot uint.
https://bugzilla.gnome.org/show_bug.cgi?id=754882
Keeping these enabled causes too many people to file
bugs against gobject, and not enough people to send
patches to port away from deprecated properties.
This is almost always what you want, because if you're using this you
want to know if any "custom code" (i.e. not the default class closure)
is going to be run if you emit this signal.
I looked at all the existing uses of this and they were all broken in the
presence of g_signal_override_class_closure().
https://bugzilla.gnome.org/show_bug.cgi?id=754986
