To be honest, i don't remember what problems were caused by it returning the
number of bytes it *wanted* to write instead of the number of bytes
it actually wrote. Probably related to the fact that fwrite could
independently fail, and ignoring its return value ignores that error.
https://bugzilla.gnome.org/show_bug.cgi?id=748064
PCRE 8.38 changed the parsing of this invalid regex. It still fails,
but with a different error (since PCRE r1539,
<http://vcs.pcre.org/pcre?view=revision&revision=1539>).
The regex /(?P<sub>foo)\g<sub/ used to raise MISSING_BACK_REFERENCE but
now raises MISSING_SUBPATTERN_NAME_TERMINATOR, so we can still have a
test for the latter.
Signed-off-by: Simon McVittie <smcv@debian.org>
Reviewed-by: Emmanuele Bassi <ebassi@gnome.org>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=759808
This causes several problems:
- Compilation in FreeBSD with --enable-gtk-doc broke
- Modules that still use the AM_GLIB_GNU_GETTEXT macro
doesnt compile anymore because /usr/share/glib-2.0/gettext
is not filled with the correct files, as this was done in
the glib custom po/Makefile.in.in
See https://bugzilla.gnome.org/show_bug.cgi?id=622991
This reverts commit e5c752371c.
Its documentation mentions that it logs a 'critical warning', but since
the macro implementation calls g_warn_message(), it does not log a
critical message, but a regular warning.
Bug 13403 introduced support for the non-POSIX variants of these APIs
found on a system called "DG/UX". Meanwhile, the complicated checks
here are breaking cross-builds on systems that we actually care about.
Remove the complicated checks and replace them with AC_CHECK_FUNCS.
Remove the resulting dead code from a couple of .c files.
https://bugzilla.gnome.org/show_bug.cgi?id=756475
Also get rid of the items regarding G_HAVE_*INLINE as they aren't used
anymore as they are removed from configure.ac.
Thanks to John Emmas and desrt for the earlier patch for getting
rid of the C4005 warnings.
We were trying to squeeze 64-bit test vectors into gsize, which is fine
on 64bit systems but doesn't work very well on 32-bit.
Change that to a guint64.
According to the C spec, any undefined identifier used in a #if
expression is taken to have a numerical value of zero.
Commit db2367e878 introduced an #i
statement which depended on this behaviour.
gcc has a -Wundef option which warns about depending on this behaviour,
and unfortunately there are projects that are using -Werror=undef in
builds that include our headers.
Adding a check for defined(__STDC_VERSION__) before using the macro is
enough to silence gcc.
It's been a long time since we've been unconditionally saying "static
inline" in GLib headers without complaints so it's safe to assume that
all compilers that we care about support this.
One thing that is not yet totally supported is the unadorned use of the
word "inline". Depending on the flags (-std=c89, for example), even GCC
will complain about this. Detect missing C99 support and define
"inline" to "__inline" in that case. Some research shows "__inline"
appears to be the most widely-supported keyword here, but we may need to
tweak this if we get some reports of breakage.
Clean up all of the configure checks around this and define G_CAN_INLINE
unconditionally. Unfortunately, we must assume that some people are
still using G_IMPLEMENT_INLINES, we must continue to implement that
(including undefining G_CAN_INLINE and redefining G_INLINE_FUNC) if
requested.
It is not our intent to break existing users of the old-style
G_INLINE_FUNC approach and if that has happened, we may need to make
some further adjustments.
https://bugzilla.gnome.org/show_bug.cgi?id=757374
gutils.h and gutils.c define three utility functions as inlines that are
also exported via the ABI. This is done via complicated G_INLINE_FUNC
and G_IMPLEMENT_INLINES logic.
In order to be able to remove this mess, we create a another convoluted
but slightly cleaner approach: write straight-up inline versions of the
functions named _impl() in the header. Define macros with the "public"
function names that call these inlines. From the .c file, export the
ABI versions of these functions, implemented using the _impl() version.
https://bugzilla.gnome.org/show_bug.cgi?id=757374
Deprecate GTrashStack and remove the inline implementations for the
functions. This will help us clean up the mess that is inline functions
in GLib.
Because of how G_INLINE_FUNC worked, we have these functions on our ABI,
so we must continue to export them as normal functions. We are safe to
remove the inline versions, however, because any existing binaries will
continue to carry them and any new builds will just start using the
non-inline versions.
https://bugzilla.gnome.org/show_bug.cgi?id=757374
Whole program optimization is enabled by default in visual studio
release builds, and this causes constructors (for e.g. resources) to be
optimized away as they are not referenced from elsewhere.
This works around this by some pragma magic.
https://bugzilla.gnome.org/show_bug.cgi?id=752837
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
It's a platform-specific macro, so it belongs in glibconfig.h.
This ensures that g-ir-scanner will not pick the wrong definition
for introspection.
https://bugzilla.gnome.org/show_bug.cgi?id=757294
Add some simple testcases for the new bounds-checked integer arithmetic
helpers.
Include a second build of the testcase to make sure we test the fallback
code even if we are on a compiler that supports the intrinsics.
https://bugzilla.gnome.org/show_bug.cgi?id=503096
Add some helpers for builds-checked unsigned integer arithmetic to GLib.
These will be based on compiler intrinsics where they are available,
falling back to standard manual checks otherwise.
The fallback case needs to be implemented as a function (which we do
inline) because we cannot rely on statement expressions. We also
implement the intrinsics case as an inline in order to avoid people
accidentally writing non-portable code which depends on static
evaluation of the builtin.
For now there is only support for addition and multiplication for guint,
guint64 and gsize. It may make sense to add support for subtraction or
for the signed equivalents of those types in the future if we find a use
for that.
https://bugzilla.gnome.org/show_bug.cgi?id=503096
Add a dummy definition for Clang's __has_builtin() macro. This will
allow us to use __has_builtin() unconditionally, in the same way as we
already do for __has_feature().
https://bugzilla.gnome.org/show_bug.cgi?id=503096
The Windows API function RtlGetVersion() is actually a function that is
decorated by WINAPI (i.e. __stdcall), so we need to correct this so that
the symbol can be loaded correctly from ntdll.dll, so that we won't crash as
a result. Should fix the crash due to stack overflow on 32-bit builds.
https://bugzilla.gnome.org/show_bug.cgi?id=756179
ntdef.h is a header that is normally only shipped with MinGW, not Visual
Studio, which broke the build in commit 975cb91. Fix this by including
winternl.h, which typedef's the NTSTATUS type in question on both Visual
Studio and MinGW/mingw-w64, as well as pre-2008 Visual Studio.
Clean up this inclusion part a little bit as well.
If we fail to PeekMessage or PostMessage we should make sure
that the output parameter bytes_read/written is set 0 instead
of being left uninitialized. This fixes an assertion in the io
channel call where the following invariant is checked:
(status == G_IO_STATUS_NORMAL) || (read_size == 0)
Ignore trailing whitespace when reading boolean values. Currently it is
very easy to manually edit a keyfile to be:
[section]
key=true_
Where '_' is a space character. g_key_file_get_boolean will read this value as
false and this is hard for a user to detect (it will be reported in GError
as an invalid value).
Trailing whitespace is ignored for numbers for the same reason. This was
fixed in 7a45dde4fe.
https://bugzilla.gnome.org/show_bug.cgi?id=664740
We were using the time() library call to get the current time from the
system in order to compare it to the time returned by
g_date_time_new_now().
Of course, we took care to ensure that the time (in seconds) didn't
change in the middle of this process by checking the before and after
value of the system time.
Unfortunately, the system time as measured by time() was being taken
from a less-accurate clock source than the time used by GDateTime. As a
result, we could have GDateTime already into the next second while the
"seconds" value of the time returned by time() was still in the last
one, even when checked "after".
Avoid the problem by using the same ultimate source for time --
g_get_real_time().
This is based on a similar patch from Iain Lane, but it uses
g_get_real_time() instead of g_get_current_time().
https://bugzilla.gnome.org/show_bug.cgi?id=754994
This function provides an O(1) check to determine if a sequence is empty.
Compare this to the two following alternatives to perform the same check.
O(h): if (0 == g_sequence_get_length (seq))
O(2h): if (g_sequence_get_begin_iter(seq) == g_sequence_get_end_iter(seq))
Where `h' is the height of the tree.
https://bugzilla.gnome.org/show_bug.cgi?id=756316
It updates it to the version c5d07ce91a8ad51591154450442fa4376441fdfa
As a difference with upstream we need to ensure:
* Include "g-gnulib.h" so the methods get the gnulib namespace.
* xsize.h uses G_MAXSIZE instead of SIZE_MAX and the methods are
marked as static inline.
* Some defines are named different from the ones in glib i.e
HAVE_LONG_LONG_INT is HAVE_LONG_LONG
All the unit tests pass properly with and without --enable-included-printf.
It has also been tested on Windows.
https://bugzilla.gnome.org/show_bug.cgi?id=756382
By default g_log_default_handler always assumes that stdout
and stderr are file descriptors 1 and 2. On Win32 this isn't
always the case as the win32 API functions AttachConsole and
freopen can be used to dynamically attach GUI applications to
a console and the file descriptors of stderr and stdout will
become different than 1 and 2.
Fix it by using fputs with the FILE directly instead of
using the file descriptors.
https://bugzilla.gnome.org/show_bug.cgi?id=692085
The VerifyVersionInfo() Win32 API has been deprecated in Windows 10, and
there is no direct replacement for it, except by using a lower-level
RtlGetVersion() that we aquire from the Windows DDK or from ntdll.dll.
Switch g_win32_check_windows_version() to use RtlGetVersion(), and
compare its results with the input parameters.
https://bugzilla.gnome.org/show_bug.cgi?id=756179
Some testutils external symbols are marked semi-internals, other
internals. It is not obvious what guarantees these symbols provide.
However, tests are now installable, and require the ABI stability
that glib provides for the rest of the symbols.
In my case, I would like to introduce g_assert* compat code for older
glib versions, and be able to use the so-called "internal" ABI.
I propose this change to the headers comments to explain the stability
guarantees. Removing the "internal" = you must not use this, in favor
of semi-internal = this is not documented.
https://bugzilla.gnome.org/show_bug.cgi?id=756077
In all these functions, group_name is guaranteed to be non-NULL by the
function preconditions, so there is no need to handle it as NULL when
building error messages. Remove some unnecessary string literals as a
result.
Coverity CID: 1325438–1325441
Copy the flatten-first logic from g_variant_get(), and for the same
reason: if the user is requesting a direct pointer access to a
tree-based child inside of argument to this function then that child
could disappear later.
Forcing serialisation means that the pointer will remain valid as long
as the passed-in instance exists, which is the usual expectation with
GVariant API.
https://bugzilla.gnome.org/show_bug.cgi?id=755374
Despite knowing about GError, there are multiple cases where developers
have still used traditional numeric error codes, and then got themselves
into a mess about bindability and generation of error messages.
Try and avoid this by including a brief paragraph on the benefits of
GError over EINVAL-style error codes.
https://bugzilla.gnome.org/show_bug.cgi?id=743011
This means that the top of the documentation can link forward to this
important section, and random people on the internet can link directly
to it on developer.gnome.org.
https://bugzilla.gnome.org/show_bug.cgi?id=743011
This reverts commit 662bf991c0. It is not
a straight up revert because the old commit involved various long since
removed ChangeLog files and we'd end up mudding the patch.
The system_header GCC pragma is breaking warnings in the various
g_return_* macros; GCC stopped warning when using a macro with a return
value in a function that returns void, as well as when using a macro
with no return value in a function that has a non-void return value.
Suppressing this kind of warnings is not a good idea.
Other compilers are unaffected, even ones like Clang with a GCC
compatibility layer.
Given the fact that the original commit was added 14 years ago as a
workaround in the old days of GTK+ 1.2, I think it's safe to drop it.
https://bugzilla.gnome.org/show_bug.cgi?id=753310
For all test cases where the text length is given as -1, also
call g_utf8_validate() with the actual string length to exercise
the known-length case. Unknown-length and known-length validation
use different code paths, but most of the tests only exercised with
unknown-length parameter.
https://bugzilla.gnome.org/show_bug.cgi?id=754924
A recent change permitted some characters from range 0x80-0xbf as
would-be valid sequence starters for length 2, as long as
continuation characters were OK.
https://bugzilla.gnome.org/show_bug.cgi?id=738504
This code is used in the property notification path, so it
better be fast. This commit removes a g_return_if_fail check and
treats the common case of just a single data element better.
Apply the same optimization that was done for g_unichar_get_script
long ago: Use a quick check for the low end, and then remember the
midpoint of the last bsearch, since we're likely to be called for
characters that are close to each other.
This change made g_unichar_iswide disappear from profiles of the
gtk3-demo listbox example.
Store the (translated, UTF-8-encoded) error strings in a hash table to
avoid doing translation and (possibly) g_locale_to_utf8() in every
g_strerror() call.
https://bugzilla.gnome.org/show_bug.cgi?id=754788
Add a check to configure.ac for strerror_r, since we don't currently
require POSIX.1-2001 conformance in general. Add back a
plain-strerror() case as a fallback, and rearrange the glibc-vs-POSIX
strerror_r() branches.
Update the docs to not claim that "not all platforms support the
strerror() function" (we require C90), but still mention the UTF-8 and
always-valid-string benefits. (And make test_strerror() check that
last part.)
https://bugzilla.gnome.org/show_bug.cgi?id=754788
Many of the append and prepend variants are just thin wrappers
around another one. Remove parameter checking in the wrapper
for these cases. The wrapped function is checking them anyway.
Unrolling the branches and expressions for all expected cases
of UTF-8 sequences facilitates the work of both an optimizing compiler
and the branch prediction logic in the CPU. This speeds up decoding
noticeably on text composed primarily of longer sequences.
https://bugzilla.gnome.org/show_bug.cgi?id=738504
The number of branches and logical operations can be reduced by
never producing a resulting wide character value to check its range.
Instead, individual bytes in the sequence are validated
depending on the branch taken on the basis of preceding bytes.
The syntax given in RFC 3629 is made use of.
https://bugzilla.gnome.org/show_bug.cgi?id=738504
Make use of the common autotools module that is used to generate the MSVC
project files from their respective templates so that the main build files
beccome cleaner, and enhance them in a way that the headers that should be
installed can be written to the property sheets during 'make dist', so that
the chances of missing headers for MSVC builds can be greatly reduced.
Also use this autotools module to fill in the projects for
glib-compile-schemas and glib-compile-resources.
https://bugzilla.gnome.org/show_bug.cgi?id=735429
Windows does not have strerror_r(), but does have strerror_s(), which is
threadsafe, and does more or less the same thing, so use it on Windows to
fix the build.
https://bugzilla.gnome.org/show_bug.cgi?id=754431
In the same way that gtestutils used to let you create multiple suites
with the same name, it also let you create multiple tests with the
same name. Make that an error instead (and fix glib/tests/base64.c,
which was registering three separate tests named
"/base64/incremental/nobreak/4", and glib/tests/autoptr.c, which was
running test_g_variant_builder() twice).
https://bugzilla.gnome.org/show_bug.cgi?id=754286
In non-TAP mode, tests that used g_test_skip() were labelled "OK", and
tests that used g_test_incomplete() were labelled "FAIL". Explicitly
show them as "SKIP" and "TODO" instead, like in the TAP case.
Also, incomplete/TODO tests are not supposed to be treated as
failures, so fix that too.
https://bugzilla.gnome.org/show_bug.cgi?id=754286
TAP allows you to print the "test plan" (ie, the expected number of
tests" either at the start or the end of the test program, but if you
put it at the end, and the program crashes, automake will complain
"missing test plan", which is confusing to users (particularly since
it prints that *before* it prints that the test program crashed,
suggesting that somehow the lack of test plan was responsible for the
crash or something, rather than vice versa).
Anyway, change it to count the tests ahead of time, and print the test
plan first. Keeping this simple requires disallowing the '-p', '-s',
and '--GTestSkipCount' options when using '--tap' (although we were
already printing the wrong number in the --GTestSkipCount case
anyway).
https://bugzilla.gnome.org/show_bug.cgi?id=754284
Rewrite g_test_suite_run() and g_test_suite_run_internal() to make it
clearer what they do (while still preserving exact backward
compatibility, meaning we need to handle the "-p" case differently
from the non-"-p" case).
https://bugzilla.gnome.org/show_bug.cgi?id=754284
It seems to be common for people to use g_warning() or g_error() as pre-
and post-condition error reporting functions, which is not really what
they’re intended for. Similarly, it is generally a sign of bad API
design to use g_warning() to report errors — use GError instead.
Try and suggest this to the user in the hope that nice code results.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
It’s very common to see code where a timeout is scheduled using
g_timeout_add(), yet the owning object could be destroyed shortly
afterwards, before the timeout is fired, leading to use-after-free.
Try and prevent this happening with new code by documenting best
practices for memory management of user data for GSource callbacks.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
It’s unfortunately common to see worker threads being spawned all over
the place to do operations which could be brought into the main thread
with an async call, simplifying everything.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
…and friends. The ‘String precision pitfalls’ section is already linked
to from all the relevant printf()-style functions, so this documentation
should hopefully be easy to find.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
The memory vtables no longer work, because glib contructors are called
before main(), so there is no way to set it them before use. This stops using
the vtable at all, and deprecates and stubs out the related functions.
https://bugzilla.gnome.org/show_bug.cgi?id=751592
We set G_ANALYZER_ANALYZING to 1 when clang supporting static analyzing before,
but this will cause compilation error when -Werror=return-type is used and the
static analyzer is not in use because g_error static function only has
__attribute__((analyzer_noreturn)), which is useless for normal compilation.
https://bugzilla.gnome.org/show_bug.cgi?id=741901
The documentation was not very clear about the handling
of the '#' comment markers. State clearly how these are
handled by the getter and the setter.
https://bugzilla.gnome.org/show_bug.cgi?id=479730
Normally, recent PCRE behaves as if certain patterns were replaced
by a more "possessive" pattern that gives the same answer for normal
regex matching, but is more efficient. However, the modified pattern
produces fewer results under DFA. If we want the full set of results
we have to apply PCRE_NO_AUTO_POSSESS, and that's a compile-time flag.
This currently only affects a system PCRE, but would also work fine for
an internal PCRE 8.34 or later if the embedded copy is updated.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=733325
Reviewed-by: Christian Persch <chpe@gnome.org>
Removed all mentions of GLib file name encoding referring to
the environment strings. The env var content has no defined relation
to GLib's notion of filename encoding, or any encoding whatsoever.
It would be wrong to pass all UTF-8 strings through
g_filename_from_utf8() in order to put them into the environment,
for one thing.
https://bugzilla.gnome.org/show_bug.cgi?id=738185
Only add [OPTION...] to the usage line if the context
has options. And shorten "Application Options" to just
"Options" if we don't have to differentiate from other
kinds of options.
This was fixed in 8.32, so if we have that version, assert that it is
fixed; if we don't (e.g. the current internal pcre), still don't
assert that it *isn't* fixed.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=733325
Reviewed-by: Christian Persch <chpe@gnome.org>
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Instead of INCLUDES, which is deprecated in automake. Using AM_CPPFLAGS
also gives the hint that the -D argument should be a CPPFLAGS variable,
rather than CFLAGS.
I searched all files that mention g_test_run, and replaced most
g_print() calls. This avoids interfering with TAP. Exceptions:
* gio/tests/network-monitor: a manual mode that is run by
"./network-monitor --watch" is unaffected
* glib/gtester.c: not a test
* glib/gtestutils.c: not a test
* glib/tests/logging.c: specifically exercising g_print()
* glib/tests/markup-parse.c: a manual mode that is run by
"./markup-parse --cdata-as-text" is unaffected
* glib/tests/testing.c: specifically exercising capture of stdout
in subprocesses
* glib/tests/utils.c: captures a subprocess's stdout
* glib/tests/testglib.c: exercises an assertion failure in g_print()
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=725981
Reviewed-by: Colin Walters <walters@verbum.org>
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
If we call time(NULL), then do something (however trivial), then call
g_date_time_new_now_utc(), they do not necessarily share a seconds
value. Let's say the gmtime call takes 2ms. time(NULL) could
return xx:xx:23 when the time is actually xx:xx:23.999999, resulting
in the g_date_time_new_now_utc() happening at xx:xx:24.000001. This is
unlikely, but did happen to me in a parallel build:
GLib:ERROR:.../glib/tests/gdatetime.c:674:test_GDateTime_now_utc: assertion failed (tm.tm_sec == g_date_time_get_second (dt)): (23 == 24)
A similar argument applies to the rollover from xx:23:59.999999 to
xx:24:00, so comparing seconds with a 1s "fuzz" or a >= comparison
is not sufficient; and so on into higher-order fields.
I haven't seen the other tests that use _now() fail in the same way,
but they could.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=749080
Reviewed-by: Philip Withnall <philip.withnall@collabora.co.uk>
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
It's unhelpful to get an error saying that stderr didn't match a
desired pattern, or matched an undesired pattern, without also
telling you what *was* on stderr. Similarly, if a test subprocess
exits 1, there's probably something useful on its stderr that
could have told you why.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=748534
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Reviewed-by: Dan Winship <danw@gnome.org>
Unlike, say, g_variant_new(), which returns a floating reference.
g_variant_parse() returns a non-floating one, so must always have
g_variant_unref() called on the result.
Our signal handler calls write() on a pipe or an eventfd in order to
deliver the notification. It's unlikely, but this could fail, setting
errno. We even check the case that it fails with EINTR.
If it does set errno, then it has potentially blown away the value or
errno that the preempted code cared about (ie: if the signal arrived
shortly after a system call but before errno was checked).
Wrap the handler with code to save errno.
https://bugzilla.gnome.org/show_bug.cgi?id=741791
Fix a few typical problems, and also stop wrapping the inline definition
of g_steal_pointer in parens, since it is not necessary and it confuses
gtk-doc.
It was added after G_END_DECLS, outside the #ifdef G_PLATFORM_WIN32,
and inside a #ifndef __GTK_DOC_IGNORE__ block. So it was missing from
the doc.
https://bugzilla.gnome.org/show_bug.cgi?id=743661
• Clarify that GError** parameters are for the return of _newly
allocated_ GError*s.
• Clarify that errors may need to be checked for explicitly if the
return value of a function doesn’t reliably indicate them.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
i.e. That calling g_timeout_add() from a thread other than the main one
probably doesn’t do what you want. Same for g_idle_add() and the
*_full() variants.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
It was documented before, but wasn’t especially clear. Doing
if (X)
g_free (X);
is apparently quite a pervasive real-world anti-pattern, so perhaps it
could be documented more explicitly.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
Just in case people have forgotten their basic algorithms course. Seen
in some pretty terrible code in the wild; hopefully mentioning the cost
in the documentation will make people think twice about using a counter
variable when iterating over a linked list.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
It’s NULL iff free_segment is TRUE, so the annotation doesn’t quite
capture all the function definition, but is a safe over-estimate of the
return value’s nullability.
https://bugzilla.gnome.org/show_bug.cgi?id=719966
I love Emacs keyboard macros, used them to convert the list of
defines cleverly into a list of tests, then iterated and filled in
the necessary constructor arguments.
- It's not sufficient, there are other bare array types
like guint8, gdouble, etc.
- Other types like GVariant* always come as pointers, whereas
there's a rather fundamental distinction between "gchar" and
"gchar*" that has been signified to C programmers for 30+ years via
the '*' character, and we're hiding that.
https://bugzilla.gnome.org/show_bug.cgi?id=744747
The g_autoptr() being associated with the type name works out really
well for things like GHashTable. However, it's a bit more awkward to
associate with "gchar". Also because one can't use "char".
Similarly, there are a lot of other "bare primitive array" types that
one might reasonably use.
This patch does not remove the autoptr for "gchar", even though I
think it's rather awkward and strange.
Also while we're here, add a test case for the cleanup bits.
https://bugzilla.gnome.org/show_bug.cgi?id=744747
This would allow bindings to use _get_option_group() functions, which
would then allow them to use GOption parsing.
This also adds introspection annotations to
g_option_context_add_group(), g_option_context_set_main_group() and
g_option_context_get_main_group().
https://bugzilla.gnome.org/show_bug.cgi?id=743349
Despite linked lists being a fairly fundamental computer science
concept, some developers insist on using:
g_list_length (list) > 0
to determine whether a list is non-empty, rather than using:
list != NULL
Add a comment to the documentation for g_list_length() and
g_slist_length() pointing out the better alternative in the hope that it
will prevent some of this abuse.
https://bugzilla.gnome.org/show_bug.cgi?id=741024
gmem.h and gthread.h made use of the inline keyword, that is not available
on all compilers in C-mode, causing builds to break on such compilers.
Include glib/gutils.h which handles the inline issue, in place of
glib/gtypes.h if applicable, which is included quite early on by
glib/gutils.h.
https://bugzilla.gnome.org/show_bug.cgi?id=744190
We have a test that #includes our headers from a C++ program to make
sure we don't throw any errors or warnings as a result of that.
The new inline implementation of g_steal_pointer() does an implicit
conversion from (void *), which is not valid in C++.
Add a cast to avoid the problem.
Thanks to Ignacio Casal Quinteiro for the report.
This is particularly nice when used with g_autoptr(). See examples in
the docs.
This patch is based upon an idea (and original patch submission) from
Will Manley <will@williammanley.net>.
https://bugzilla.gnome.org/show_bug.cgi?id=742456
This is necessary as we are using _GLIB_AUTOPTR_TYPENAME and
_GLIB_AUTOPTR_FUNC_NAME in gtype.h for G_DECLARE_DERIVABLE_TYPE and
G_DECLARE_FINAL_TYPE, but _GLIB_AUTOPTR_TYPENAME and
_GLIB_AUTOPTR_FUNC_NAME expand to nothing on non-GCC, causing builds on
non-GCC to break, due to bad typedef and function definitions.
This patch defines a new private macro which does what is needed on GCC
builds and does nothing on non-GCC builds, thus fixing the build.
https://bugzilla.gnome.org/show_bug.cgi?id=743640
Add the missing 'none' argument to this macro in the non-GCC case. The
none parameter was added after the others and I forgot to update the
non-GCC case.
https://bugzilla.gnome.org/show_bug.cgi?id=743640
Add g_auto() and g_autoptr() as helpers for declaring variables with
automatic cleanup.
Add some macros to help types define cleanup functions for themselves.
Going forward it will be an expectation that people use this macro when
creating a new type, even if they do not intend to use the auto-cleanup
functionality for themselves.
These new macros only work on GCC and clang, which is why we resisted
adding them for so long. There exist many people who are only
interested in writing programs for these compilers, however, and a
similar API in libgsystem has proven to be extremely popular, so let's
expose this functionality to an even wider audience.
We ignore deprecation warnings when emitting the free functions, which
seems suspicious. The reason that we do this is not because we want to
call deprecated functions, but just the opposite: sometimes the free
function will be an _unref() function that is only AVAILABLE_IN newer
versions, and these warnings are also implemented as deprecation
warnings.
https://bugzilla.gnome.org/show_bug.cgi?id=743640
This adds a public API where one can use to see whether the running version
of Windows where the code is run is at least the specified version, service
pack level, and the type (non-server, server, any) of the running Windows
OS.
This API is done as:
-GetVersion()/GetVersionEx() changed in the way they work since Windows 8.1
[1][2], so a newer mechanism to check the version of the running Windows
operating system is needed. MSDN also states that GetVersion() might be
further changed or removed after Windows 8.1. This provides a wrapper for
VerfyVersionInfo() as well in GLib for most cases, which was recommended
in place of g_win32_get_windows_version() for more detailed Windows
version checking.
-Provides an OS-level functionality check, for those that we don't need to
venture into GetProcAddress(), and also to determine system API behavior
changes due to differences in OS versions.
Also added a note for the g_win32_get_windows_version() API that since the
behavior of GetVersion() which it uses, is changed since Windows 8.1, users
of the API should be aware.
[1]:
http://msdn.microsoft.com/zh-tw/library/windows/desktop/ms724451%28v=vs.85%29.aspx
[2]:
http://msdn.microsoft.com/zh-tw/library/windows/desktop/ms724451%28v=vs.85%29.aspxhttps://bugzilla.gnome.org/show_bug.cgi?id=741895
Include an example main() function, and include a link to the gettext
manual’s section on integrating gettext with build systems.
That should work as a complete reference for how to add i18n support to
an application.
https://bugzilla.gnome.org/show_bug.cgi?id=742972
Update config.h.win32.in and glibconfig.h.win32.in so that they will be
in-line with the ones that are produced with configure.ac, for use on
Windows builds.
Thanks to Philip Withnall for pointing out the changes needed to update
glibconfig.h.win32.in in bug 727829.
We should not advise people to cast the result of
g_hash_table_get_keys_as_array() to a type that looks suitable for use
with g_strfreev(). Advise to use (const gchar **) instead.
We intend to keep the list of poll records sorted by (integer) file
descriptor, but due to a typo we are actually keeping it sorted by
pointer address of the GPollFD.
Fix that.
https://bugzilla.gnome.org/show_bug.cgi?id=11059
It simplifies a little bit some code that inserts data relative to a
GList location, that might be NULL for the tail of the queue. A NULL
sibling is probably less useful for insert_after(), so it's more for
consistency with insert_before().
https://bugzilla.gnome.org/show_bug.cgi?id=736620
If a given fd is being polled by multiple sources, we used to pass it
multiple times to g_poll(), which is technically illegal (and not
supported by the select()-based fallback implementation of poll() in
gpoll.c), and also made it more likely that we'd exceed the maximum
number of pollfds.
Fix it to merge together "duplicate" GPollFDs. The easiest way to do
this involves re-sorting context->poll_records into fd order rather
than priority order. This means we now have to walk the entire pollrec
list for every g_main_context_query() and g_main_context_poll(),
rather than only walking the list up to the current max_priority.
However, this will only have a noticeable effect if you have tons of
GPollFDs, and we're already too slow in that case anyway because of
other O(n) operations that happen too often. So this shouldn't change
much (and the new poll API will eventually let us be cleverer).
Remove some win32-specific code which did the same thing (but was
O(n^2)).
https://bugzilla.gnome.org/show_bug.cgi?id=11059
We called getopt() to try to find out of the platform on which we are
running defaults to strict POSIX-style argument handling (ie: flags
following the first filename are considered as further filenames rather
than flags).
This is the default case on BSDs, for example. It is also the case on
GNU systems with the POSIXLY_CORRECT environment variable set.
Unfortunately many of our tools rely on being able to accept commandline
arguments in the non-strict ordering and the code for making these calls
is spread widely (for example in Makefile fragments invoking some of our
build tools).
For this reason we need to revert the getopt() check and only enable
strict POSIX mode in the case that the application explicitly opts into
it using the _set_strict_posix() API.
This also fixs a failure to build on Windows due to missing getopt().
https://bugzilla.gnome.org/show_bug.cgi?id=723160
With this patch it is fine to call g_hash_table_lookup and
g_hash_table_remove from destroy notification functions. Before
this could lead to an infinitie loop if g_hash_table_remove_all
was used.
https://bugzilla.gnome.org/show_bug.cgi?id=695082
Add a "posixly correct" mode to GOption to stop parsing arguments as
soon as the first non-option argument is encountered.
We determine the default value on the basis of duplicating the behaviour
of the system getopt() implementation (which we directly check the
behaviour of at runtime). On GNU systems this allows the user to modify
our behaviour using POSIXLY_CORRECT.
The user can change the value by g_option_context_set_strict_posix(),
which might be useful for some usecases of GOptionContext (as mentioned
in the doc string of this new function).
https://bugzilla.gnome.org/show_bug.cgi?id=723160
g_get_monotonic_time() and g_get_real_time() now always use different
clocks, so we cannot avoid correcting for their offset. Fixes failure
to time out on Mac OS X.
https://bugzilla.gnome.org/show_bug.cgi?id=738197
Internal allocation size (array->alloc) was being kept to 0 when a new
GByteArray was created from an already existing heap-allocated buffer.
Among other things, this was making g_byte_array_set_size() fully clear all
the buffer contents (not just the newly allocated memory) when
G_DEBUG=gc-friendly was being used...
if (G_UNLIKELY (g_mem_gc_friendly))
memset (array->data + array->alloc, 0, want_alloc - array->alloc);
https://bugzilla.gnome.org/show_bug.cgi?id=738170
If a GSource is created, *not* attached to a GMainContext, and then has
child sources added, dropping the last reference to the parent GSource
will leak its references to its child sources. Currently, child sources
are only unreffed when g_source_destroy() is called on the parent.
https://bugzilla.gnome.org/show_bug.cgi?id=737338
This ensures the uintptr_t type is defined on mingw-w64.
Fixes compile error:
make[4]: Entering directory
`/home/abuild/rpmbuild/BUILD/glib-2.42.0/gobject'
CC libgobject_2_0_la-gtype.lo
In file included from gtype.c:24:0:
../glib/valgrind.h: In function 'VALGRIND_PRINTF':
../glib/valgrind.h:5601:4: error: unknown type name 'uintptr_t'
uintptr_t _qzz_res;
^
https://bugzilla.gnome.org/show_bug.cgi?id=737143
Step up thread safety on g_source_set_name() to the same standard as all
other GSource functions: after we are attached to a main context, this
function should be threadsafe.
https://bugzilla.gnome.org/show_bug.cgi?id=736683
Document that one must not use the "by id" source APIs with non-existent
IDs. The real justification behind this restriction is that the reuse
of source ids makes it unsafe to call these functions unless you're
absolutely sure that the source exists and it belongs to you. If you
call one of these functions on a source that may already have been
removed then you run the risk of finding someone else's source (with
your reused id).
This also bails us out of a slightly tricky situation with respect to
the threadsafety of g_main_context_find_source_by_id(). The fact that
this function doesn't return a reference implies that its return value
cannot be safely accessed unless we already know for sure that a
reference is being held elsewhere (by example, by the main context
itself if we know that the source has not been removed). The function
itself, however, performs an access to the value, which could result in
a crash.
If we mandate that it is only valid to call this function on
known-to-exist source IDs then we dodge this problem.
https://bugzilla.gnome.org/show_bug.cgi?id=736683
This confused me for a while, because it isn't the same as D-Bus.
Like GVariant, the D-Bus serialization needs an out-of-band
endianness and type indicator, but unlike GVariant, serialized
D-Bus objects encapsulate their own length (often by starting with
a byte-count). This does come at some redundancy cost, so I can see
why the more efficient GVariant format does this the way it does;
but it's a difference between D-Bus and GVariant that seems worth
calling out.
It's also relevant for the designers of file or message-framing
formats: with D-Bus serialization it would be feasible to say "the file
starts with a little-endian D-Bus variant, followed by...",
but in GVariant you wouldn't be able to deserialize the variant
unless you either assume that it extends to end-of-file, or have
an explicit length.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=736975
Reviewed-by: Ryan Lortie
For the GPtrArray example, several variables declared on the same line
is harder to read and to work with (to move, remove or comment a single
variable declaration).
As an example, the core of gedit is in a private library
placed in %INSTALLDIR%/lib/gedit/libgedit.dll
Before this patch we would get %INSTALLDIR%/lib/gedit as the
installation package dir, while what we actually want is to get
%INSTALLDIR%
https://bugzilla.gnome.org/show_bug.cgi?id=733934
Practically no caller of these functions require atomic behaviour,
but the atomics are much slower than normal operations, which makes
it desirable to get rid of them. We have not done this before because
that would be a break of the ABI.
However, I recently looked into this and it seems that even if the
atomics *are* used for g_clear_* it is not ever safe to use this. The
atomics protects two threads that are racing to free a global/shared
object from freeing the object twice. However, any *user* of the global
object have no protection from the object being freed while in use,
because there is no paired operation the reads and refs the object
as an atomic unit (nor can such an operation be implemented using
purely atomic ops).
So, since nothing could safely have used the atomic aspects of these
functions I consider it acceptable to just remove it.
https://bugzilla.gnome.org/show_bug.cgi?id=733969
This reverts commit 7269d75321.
Adding G_STATIC_ASSERT() into a header file caused compilation
problems with at least one app (Anjuta). Reverting to keep
GNOME continuous testing running.
https://bugzilla.gnome.org/show_bug.cgi?id=730932
This code assumes that int is exactly 4 bytes, and that pointers
are either 4 or 8 bytes, on platforms with __ATOMIC_SEQ_CST.
In practice this is going to be true.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=730932
Since we are getting passed Unicode values these global vars
might not have the correct value. Instead always get the wide arguments
and convert them to utf8 to use them.
https://bugzilla.gnome.org/show_bug.cgi?id=733146
Detect the following two errors:
- attempting to unlock a mutex that is not locked
- attempting to clear a mutex that was not initialised or was
initialised but is still locked
Both of these are fatal errors. We avoid using g_error() here because
doing so would involve calls back into the GMutex code, and if things
are going off the rails then we want to avoid that.
https://bugzilla.gnome.org/show_bug.cgi?id=731986
If we have futex(2) then we can implement GMutex natively and gain a
substantial performance increase (vs. using pthreads).
This also avoids the need to allocate an extra structure in memory when
using GMutex or GCond: we can use the structure directly.
The main reason for the increase in performance is that our
implementation can be made more simple: we don't need to support the
array of options on pthread_mutex_t (which includes the possibility, for
example, of being recursive).
The result is a ~30% improvement in uncontended cases and a much larger
increase (3 to 4 times) in contended cases for a simple testcase.
https://bugzilla.gnome.org/show_bug.cgi?id=731986
When GLib had been told to expect message X, but then actually saw
message Y, it would log the "did not see expected message" error with
message Y's log level and domain, which makes no sense. Change it to
log with domain "GLib" and G_LOG_LEVEL_CRITICAL instead.
Also, include the expected domain in the error message, so that if
that's the reason why the expectation didn't match, you can tell that
from the error message.
Update glib/tests/testing.c for these changes; for all other test
programs in GLib and elsewhere, this change should not break any
existing tests, it should only improve the output on failure.
https://bugzilla.gnome.org/show_bug.cgi?id=727974
...so that builds of GLib on x64 Visual C++ can be restored, as the build
fails in line 449 of valgrind.h as it only supports MinGW/GCC for x64
Windows and simply will not build otherwise. Make the x64 Visual C++
builds compile again by defining NVALGRIND when GLib is being built for
Windows on x64 Visual C++.
https://bugzilla.gnome.org/show_bug.cgi?id=732465
- g_subprocess_launcher_spawn() and spawnv(): there is no other way
AFAIK to create a GSubprocess from a launcher. So these
functions are not "convenience helper".
- annotate optional arguments for g_shell_parse_argv().
- other trivial fix
https://bugzilla.gnome.org/show_bug.cgi?id=732357
Our internal call to g_io_channel_read_line_backend() may return
G_IO_STATUS_ERROR, in which case two things will be true:
- the GError will have been set (if appropriate)
- the &got_length return value may not have been set
Since it's our convention to leave 'out' parameters untouched in
exception cases, this is perfectly fine. Unfortunately,
g_io_channel_read_line(), in wrapping this internal function, always
promotes the length parameter, even in the case of error.
Stop doing that in order to avoid overwriting the callers's variable
with junk in the error case.
https://bugzilla.gnome.org/show_bug.cgi?id=731339
Move width table generation into the gen-unicode-tables.pl script. This makes
updating the tables automatic without the previously required manual editing
required to insert the tables in the right place of the source code.
memcmp() is declared by glibc as follows:
/* Compare N bytes of S1 and S2. */
extern int memcmp (const void *__s1, const void *__s2, size_t __n)
__THROW __attribute_pure__ __nonnull ((1, 2));
despite the fact that it is valid to call it with a null pointer if the
size is zero.
gcc 4.9.0 contains a new optimisation that sees that we pass a pointer
to this function and concludes that it certainly must not be null,
removing a later check and thereby causing a crash.
We protect the invocation of memcmp() with a condition to prevent gcc
from making this false assumption (arguably under wrong advice from
glibc).
The code in g_wakeup_signal() is currently correct: it writes a 64-bit
counter increment value if the FD is an eventfd, and writes an arbitrary
8-bit value if using a normal pipe.
However, the reasoning behind these buffer sizes is not clear, and the
mismatch between the allocated buffer size and the length passed to
write() in the pipe case could be mistaken for a bug.
Coverity issue: #1159490https://bugzilla.gnome.org/show_bug.cgi?id=732002
clang defines the macro that we use to test for GCC's extension support
for C11 atomics, but doesn't define the extension in the same way.
Check for clang and disable the macros again if we find it.
https://bugzilla.gnome.org/show_bug.cgi?id=731513
A static analyzer flagged the g_file_get_contents() call as not
checking its return value. While the code here is actually correct,
it's verbose at best.
I think the "goto out + cleanup" code style is substantially cleaner,
less error prone, and easier to read. It also will pacify the static
analyzer.
https://bugzilla.gnome.org/show_bug.cgi?id=731584
Give compiler a hint that these should be inlined,
which doesn't seem to happen by default with -O2.
Yields 5% speedup in artificial benchmarks, and
1% speedup in a real-world test case doing a lot
of mutex locking and unlocking.
https://bugzilla.gnome.org/show_bug.cgi?id=730807
GCC does not yet support ISO C11 atomic operations, but it has
compatible versions available as an extension. Use these for load and
store if they are available in order to avoid emitting a hard fence
instruction (since in many cases, we do not need it -- on x86, for
example).
For now we use the fully seqentially-consistent memory model, since
these APIs are documented rather explicitly: "This call acts as a full
compiler and hardware memory barrier".
In the future we can consider introducing new APIs for the more relaxed
memory models, if they are available (or fall back to stricter ones
otherwise).
https://bugzilla.gnome.org/show_bug.cgi?id=730807
