The array is an array of bytes in this part of the test, so we need to
append a single byte. Previously we were reusing val (a size_t variable)
from earlier in the test, but because g_array_append_val passes the value
by reference, appending a multi-byte number to an array of bytes will
take the first byte of the number's memory representation, which has the
desired value on little-endian CPUs but is zero on big-endian, leading
to a test failure.
Resolves: https://gitlab.gnome.org/GNOME/glib/-/issues/2918
Bug-Debian: https://bugs.debian.org/1031271
Signed-off-by: Simon McVittie <smcv@collabora.com>
Change originally by Piotr in !3257, but the CI has problems with
his name in the author field. Since this change is blocking a release,
I have decided to merge it under my name instead, so that it lands sooner.
In parallel, we are trying to figure out what is broken with the CI so
this does not happen again.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
It’s a private API, and is not meant to be exposed in the public API.
Since it’s only used internally within libglib, we don’t have to expose
it in the public symbol table, so drop the decorator.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #2876
It’s not meant to be exposed publicly yet (we’re not ready to stabilise
it), but it was incorrectly decorated with `GLIB_AVAILABLE_IN_2_76`.
We can’t remove the decorator and use it that way, as it’s called in
libgio, so we have to expose it using `GLIB_PRIVATE_CALL()`.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Fixes: #2876
GObject-Introspection seems to become confused by the nested conditional
followed by an `#elif` clause for the outer conditional, and issues
this warning:
.../gtimezone.c:830: mismatched #elif defined (G_OS_WIN32)
Signed-off-by: Simon McVittie <smcv@collabora.com>
GObject-Introspection and gtk-doc both parse C headers using regular
expressions, so they can easily be confused by non-trivial conditions.
GObject-Introspection warns about this:
.../gstrfuncs.h:151: the __GI_SCANNER__ constant should only be used with simple #ifdef or #endif: #if !defined (__GTK_DOC_IGNORE__) && !defined (__GI_SCANNER__)
In this case it's very easy to convert the compound expression into
nesting.
Signed-off-by: Simon McVittie <smcv@collabora.com>
The sample code here wasn't a race-free version of the race-susceptible
anti-pattern, because it would have dereferenced a symlink automatically.
Fixes: 293b4923 "Clarify g_file_test() docs about TOCTOU bugs"
Signed-off-by: Simon McVittie <smcv@collabora.com>
The canonical directory separator is a backslash, but some Windows APIs
allow either, interchangeably. Do the same here.
Resolves: https://gitlab.gnome.org/GNOME/glib/-/issues/2914
Signed-off-by: Simon McVittie <smcv@collabora.com>
Glib does not yet have a well defined ABI/API for architectures
where gsize != guintptr (e.g. CHERI). To enable working on bringup
for new architectures this assertion can be disabled with
`-DG_ENABLE_EXPERIMENTAL_ABI_COMPILATION`.
See https://gitlab.gnome.org/GNOME/glib/-/issues/2842
[smcv: Apply review comments from pwithnall]
Signed-off-by: Simon McVittie <smcv@collabora.com>
On closer inspection, these are redundant with stricter assertions that I
added in commit bd1e2a98 "glib-init: Statically assert more facts about
standard types", which assert that sizeof (gintptr) == sizeof (void *).
As far as I can tell, a sufficiently pedantic interpretation of Standard
C doesn't actually require (u)intptr_t to be the same size as a pointer:
it only requires that pointers can be losslessly stored in a (u)intptr_t,
which a sufficiently pathological ABI could implement by having (for
example) 32-bit pointers and a 64-bit uintptr_t just to troll us. However,
I'm fairly confident that no practically useful ABI would do this,
and certainly nobody has complained about this assertion since 2020.
Similarly, Standard C might permit an ABI where 64-bit pointers have the
first 32 bits always-zero and therefore storing the remaining bits in a
32-bit uintptr_t is lossless, but again, that would be pathological.
This reverts commit da3fc59544.
Signed-off-by: Simon McVittie <smcv@collabora.com>
Do not use 4-spaces indentation for return and argument descriptions, to
avoid getting rendered as preformatted blocks.
Annotate code examples with their language, for syntax highlighting.
Isolate the first paragraph to give a short description.
Do not show just what not to do: show what to do instead, otherwise
people won't know how to fix their code.
Make sure to link to an explanation of the TOCTOU class of bugs;
Wikipedia is as good a place as any.
Since gmodule-visibility.h is now a custom target and produced at
buildtime, it might not always exist in time for use in other source
files. This was the case for gio-inotify.
Add it as an additional source file to ensure in-time generation.
