Instead of Windows 7/8/8.1 Server, use the proper names Server 2008
R2/2012/2012 R2 so that things are clearer to people. Since nowadays
GLib requires Windows 7 (_WIN32_WINNT 0x0601, meaning the server
counterpart is Server 2008 R2), we include Server 2008 in the list for
completeness' sake, but exclude the Server 2003/2003R2 from the list.
This improves how we obtain the Windows release versions in
get_windows_version(), in turn g_get_os_info() for Windows Server 2016
and later, and Windows 10 20H2 (2009) and later and Windows 11, by doing
the following:
* Check the build number. For Windows 11, the build number is 22000+;
for Windows Server 2022, the build number is 20348, and for Windows
Server 2019, the build number is 17763. We know what OS build
numbers to check for by the Windows OS type that we obtained by using
g_win32_check_windows_version(). Show the actual server release
string (i.e. Windows Server 20xx yyyy) as appropriate, as a result.
* Check the DisplayVersion entry in the registry under
SOFTWARE\Microsoft\Windows NT\CurrentVersion if we obtained "2009"
from the ReleaseId entry, since DisplayVersion replaces ReleaseId
after Windows 10/Server 2019 20H2 (2009). This makes things more
clear for Windows releases after 20H2, where previously 20H2
and 21H1 were all identified as Windows 10 [Server] 2009.
This should fix issue #2443.
Unfortunately, we may well be likely to need to call RtlGetVersion() via
GetModuleHandle() + GetProcAddress(), so split out the call to RtlGetVersion()
into a private function of its own, so that we can reuse the same code in other
parts of GLib, so that we can:
* Determine better in a more fine-tuned way to determine whether we are on
Windows 10/11 and/or Server 2016/2019/2022, since we need to rely on the
build number.
* Just call RtlGetVersion() once, when needed, as that is all that is needed.
We could re-use the same function once to compare what we got when we
called RtlGetVersion() and do what is necessary there.
There are no compiler warnings when building on macOS CI at the moment,
so let’s keep it that way by turning any future ones into errors.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Previously they were only passed to the C compiler, which meant disabled
warnings were still emitted when (for example) including C headers from
C++ and ObjC files.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
gio/tests/gio-du.c: In function 'main':
gio/tests/gio-du.c:74:11: error: parameter 'argc' set but not used
74 | main (int argc, char **argv)
| ~~~~^~~~
gio/ginputstream.c: In function 'g_input_stream_real_skip':
gio/ginputstream.c:433:31: error: comparison of integer expressions of different signedness: 'goffset' {aka 'long long int'} and 'long long unsigned int'
433 | (start + count) > (guint64) end)
| ^
glib/gutf8.c: In function 'g_utf8_get_char_extended':
glib/gutf8.c:626:39: error: comparison of integer expressions of different signedness: 'guint' {aka 'unsigned int'} and 'gssize' {aka 'int'}
626 | if (G_UNLIKELY (max_len >= 0 && len > max_len))
| ^
glib/gmacros.h:1091:27: note: in definition of macro 'G_UNLIKELY'
1091 | #define G_UNLIKELY(expr) (expr)
| ^~~~
glib/gutf8.c:628:21: error: comparison of integer expressions of different signedness: 'guint' {aka 'unsigned int'} and 'gssize' {aka 'int'}
628 | for (i = 1; i < max_len; i++)
| ^
gio/gwin32appinfo.c: In function 'uwp_package_cb':
gio/gwin32appinfo.c:3383:17: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i = 0; i < supported_extgroups->len; i++)
^
gio/gwin32appinfo.c:3389:29: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i_ext = 0; i_ext < grp->extensions->len; i_ext++)
^
gio/gwin32appinfo.c:3430:35: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i_verb = 0; i_verb < grp->verbs->len; i_verb++)
^
gio/gwin32appinfo.c:3463:33: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i_hverb = 0; i_hverb < ext->verbs->len; i_hverb++)
^
gio/gwin32appinfo.c:3478:17: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i = 0; i < supported_protocols->len; i++)
^
gio/gwin32appinfo.c:3541:33: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (i_hverb = 0; i_hverb < url->verbs->len; i_hverb++)
^
gio/gwin32appinfo.c: In function 'g_win32_app_info_launch_internal':
gio/gwin32appinfo.c:4799:37: warning: comparison of integer expressions of different signedness: 'gint' {aka 'int'} and 'guint' {aka 'unsigned int'}
for (p_index = 0; p_index <= g_strv_length (envp); p_index++)
^~
gio/gwin32packageparser.c: In function 'WIN32_FROM_HRESULT':
gio/gwin32packageparser.c:99:30: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'long int'
if ((hresult & 0xFFFF0000) == MAKE_HRESULT (SEVERITY_ERROR, FACILITY_WIN32, 0) ||
^~
Rather than using the fixed-type compiler builtins
(`__builtin_uadd_overflow()`, etc.), use the generic versions
(`__builtin_add_overflow()`). This avoids issues with matching the
definition of GLib types (such as `guint` and particularly `gsize`) to
basic C types (`int`, `long`, `long long`), as the mapping can vary
between platforms.
See https://gcc.gnu.org/onlinedocs/gcc/Integer-Overflow-Builtins.html
Adjust the fallback inline functions similarly.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Fixes: #2523
We now guarantee that GObjects will always be allocated at least as
aligned as the basic types. If you want to put an element in your
GObject which has higher alignment requirements, we can’t guarantee it
will be aligned*. If you need it to be aligned, you’ll need to put it on
the heap (aligned appropriately), or add appropriate padding in your
GObject struct.
*Actually, GSlice will guarantee that the whole GObject is aligned to at
least the power of 2 greater than or equal to the size of the GObject,
which means any element in the GObject struct should always be
appropriate aligned if the compiler pads it appropriately. If malloc()
is used, however, it doesn’t make that guarantee, so we can’t make that
guarantee overall.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Helps: #1231
Regardless of the actual alignment of the GTypeInstance in question,
these do a runtime check on the type, so if the type was originally
aligned correctly when allocated, it should be aligned correctly if the
type check succeeds. -Wcast-align is meant to warn about casts between
types, which this isn’t (if the check succeeds).
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #1231
See the reasoning in the patch for why we believe GObjects *are*
(already) as aligned as the basic types.
We want to make this guarantee so that it’s guaranteed to be safe for
people to ignore -Wcast-align warnings for GObjects which contain basic
types. This typically happens with gdouble on 32-bit ARM platforms.
The checks are slightly complicated by the need to support GObjects with
custom constructors. We should expect that a custom construction
function will chain up to g_object_constructor (which calls
g_type_create_instance() as normal), but it’s possible that someone has
done something crazy and uses a custom allocator which doesn’t return
with the same alignment as GSlice. Hand them a warning in that case. If
that is true, the code which uses their custom-constructed GObject can
presumably already deal with the alignment it gets given.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Helps: #1231
This was previously done (by commit 63038d1e4c) in one of the cases
where `kill_test_service()` was called — but not the other.
This meant that one instance of `gdbus-testserver` could still be
around when (as it happens, due to the order of the tests) the
`/gdbus/proxy/no-match-rule` test was run. It would start a second
instance of `gdbus-testserver`, which would exit early due to the test
name still being owned on the bus. The first (killed) instance of
`gdbus-testserver` would then exit, leaving no test servers running, and
hence the new test would fail.
This was being seen as frequent CI failures, particularly on FreeBSD
(must have slightly different timing for process signalling and
termination from Linux).
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Once upon a time, we tried to return all possible certificate errors,
but it never actually worked reliably and nowadays we have given up.
This needs to be documented because a reasonable developer would not
expect it.
Because mistakes could be security-critical, I decided to copy the same
warning in several different places rather than relying only on
cross-referencese.
Use g_macro__has_attribute to detect it instead of
hardcoding __GNUC__ || __clang__. This adds support
for a few compiler and is consistent with the rest
of the gmacros.h file.
