We need to ensure that all the expected macros and utilities are working
with all the supported C standards, so just repeat the tests with all
the ones the compiler supports.
We defined G_NO_RETURN as [[noreturn]] in the C++ case, but only after
trying the __attribute__ syntax, so it was never used in GNUC compatible
compilers.
Give it priority instead when supporting a C++11 compiler and onwards.
As per this we need to adapt the code in the places where it was not
properly used (leading to compilation warnings).
Sadly, in C++ there's not an universal way to get what language standard
is used to compile GLib-based programs, in fact while most compilers
relies on `__cplusplus`, MSVC is defining that, but it does not use it
to expose such information (unless `/Zc:__cplusplus` arg is used).
On the other side, MSVC reports the language standard via _MSVC_LANG [1].
This complication makes us defining some macros in a very complex way
(such as glib_typeof()), because we need to perform many checks just to
understand if a C++ compiler is used and what standard is expecting.
To avoid this, define multiple macros that can be used to figure out
what C++ standard is being used.
[1] https://docs.microsoft.com/en-us/cpp/build/reference/zc-cplusplus?view=msvc-170
g_close() now is async-signal-safe, as long as we don't request a GError
and pass a valid file descriptor.
Update "gspawn.c" to drop its safe_close() function and use
g_close() instead.
g_close() does something useful. It is not trivial to get EINTR handling of
close() right, in a portable manner. g_close() abstracts this.
We should allow glib users to use the function even in async-signal-safe
contexts, at least if the user heeds the caveat about GError and take care
not to fail assertions.
Retry on EINTR is wrong on many OS, including Linux. See the comment
in g_close() why that is.
As we cannot use g_close() after fork, we had safe_close(). This had the
wrong retry loop on EINTR. Drop that.
This was especially problematic since commit 6f46294227 ('gspawn: Don’t
use g_close() in async-signal-safe context'). Before, safe_close() was
only called after fork, where there is only one thread and there is no
concern about a race.
This patch only exists for easier backporting of the bugfix. The code
will be reworked further next.
Fixes: 6f46294227 ('gspawn: Don’t use g_close() in async-signal-safe context')
In recent Clang we may get a build warning as per:
../gio/gtask.c: warning: implicit truncation from 'int' to a
one-bit wide bit-field changes value from 1 to -1
[-Wsingle-bit-bitfield-constant-conversion]
This is because we use gboolean (and thus a signed type) for bit-fields.
Now, this is not an issue in practice for the way we're using them, but
still better to mute such compiler warns in the right way.
Freebsd doesn't always have /proc mounted, so relying on
/proc for the tests isn't ideal.
This commit changes the desktop-app-info tests to use
mkfifo instead of /proc/../fd/.. to relay terminal
arguments.
Might help with this error message I'm seeing in CI:
/tmp/bin-path-H1UQT1/gnome-terminal: cannot create /proc/38961/fd/6: No such file or directory
In case the XDG database is not initialized yet we may try to sniff a
0-length data, making our content-type routines to mark non-empty files
as `application/x-zerosize`.
This is wrong, so in case the sniff size is not set, let's just
try to read the default value. To avoid false-application/x-zerosize
results (that are not something we want as per legacy assumptions).
See: https://bugzilla.gnome.org/show_bug.cgi?id=755795
Fixes: https://gitlab.gnome.org/GNOME/glib/-/issues/2742
It causes the tests to fail, which suggests some latent FD handling bug
on macOS (but not other platforms).
Unfortunately I’m unable to debug that due to not having access to a
macOS machine, and it’s blocking CI for the rest of the project.
So disable it on macOS for now, until someone with access to a macOS
machine can take a look.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #2785
They only indicate whether the value had to be modified to keep it
valid. That doesn’t matter when binding values.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Coverity CID: #1498116, #1498114
Return `G_VARIANT_PARSE_ERROR_RECURSION` from `g_variant_parse()` if a
typedecl is found within a text-form variant which would cause any part
of the variant to exceed the maximum allowed recursion/nesting depth.
This fixes an oversight when `G_VARIANT_MAX_RECURSION_DEPTH` was
implemented, which allowed typedecls to effectively multiply the size of
an array if `g_variant_parse()` was parsing a text-form variant without
a top-level concrete type specified.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Fixes: #2782
oss-fuzz#49462
At the moment, glib assumes that if /etc/localtime is a symlink,
that it's a symlink to zoneinfo file.
Toolbx containers add an extra layer of indirection though, making
it a symlink to a symlink to a zoneinfo file.
This commit deals with the problem, by performing additional checks
on /etc/localtime and ignoring it if those check fail, falling back
instead to reading /etc/timezone.
