As per the previous commit, it’s possible for
`g_printf_string_upper_bound()` to return an error. We need to catch and
handle that error in `g_vasprintf()` to avoid it trying to write to a
`NULL` string allocation and crashing.
So, call `g_vsnprintf()` directly instead of calling
`g_printf_string_upper_bound()`, so that the error case can be handled.
There was already a test for some of this behaviour
(`test_vasprintf_invalid_format_placeholder()`). Because it tested an
invalid format string, the `_g_vsprintf()` call bailed out before
checking whether the buffer it had been passed was `NULL`. The new test
has a valid format string, but an invalid arg.
When running the tests locally, I have disabled the `USE_SYSTEM_PRINTF`
and `HAVE_VASPRINTF` code paths in `g_vasprintf()`.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Fixes: #3187
Spotted in https://gitlab.gnome.org/GNOME/glib/-/issues/3187.
In an ideal world, this API would have been designed with an error
return path to begin with — perhaps by returning a `GError` or a
`gssize`. We can’t change the API now, though, which leads to this
slightly awkward “0 indicates an error or success” pattern.
I think that’s justified in this case because:
- This API does not see much use.
- Format strings tend to be literals, and almost always are
non-zero-length, so it tends to be statically possible to determine
that the function won’t return zero on success.
- If callers do need to differentiate the two zero return value cases,
they can just call `g_vsnprintf()` directly instead.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3187
This reverts commit 476e33c3f3.
We’ve decided to remove `G_OS_DARWIN` in favour of recommending people
use `__APPLE__` instead. As per the discussion on #2802 and linked
issues,
* Adding a new define shifts the complexity from “which of these
platform-provided defines do I use” to “which platform-provided
defines does G_OS_DARWIN use”
* There should ideally be no cases where a user of GLib has to use
their own platform-specific code, since GLib should be providing
appropriate abstractions
* Providing a single `G_OS_DARWIN` to cover all Apple products (macOS
and iOS) hides the complexity of what the user is actually testing:
are they testing for the Mach kernel, the Carbon and/or Cocoa user
space toolkits, macOS vs iOS vs tvOS, etc
Helps: #2802
Some of GLib's unit tests are under an apparently GLib-specific
permissive license, vaguely similar to the BSD/MIT family but with the
GPL's lack-of-warranty wording. This is not on SPDX's list of
well-known licenses, so we need to use a custom license name prefixed
with LicenseRef if we want to represent this in SPDX/REUSE syntax.
Most of the newer tests seem to be licensed under LGPL-2.1-or-later
instead.
Signed-off-by: Simon McVittie <smcv@collabora.com>
This was mostly machine generated with the following command:
```
codespell \
--builtin clear,rare,usage \
--skip './po/*' --skip './.git/*' --skip './NEWS*' \
--write-changes .
```
using the latest git version of `codespell` as per [these
instructions](https://github.com/codespell-project/codespell#user-content-updating).
Then I manually checked each change using `git add -p`, made a few
manual fixups and dropped a load of incorrect changes.
There are still some outdated or loaded terms used in GLib, mostly to do
with git branch terminology. They will need to be changed later as part
of a wider migration of git terminology.
If I’ve missed anything, please file an issue!
Signed-off-by: Philip Withnall <withnall@endlessm.com>
This allows test calls to produce output with \n
line separators on Windows, instead of \r\n.
Reduces the number of ifdefs, since all checks
can be done against one template on all platforms.
Assume all supported platforms implement C90, and therefore they
(correctly) implement atexit(), memmove(), setlocale(), strerror(),
and vprintf(), and have <float.h> and <limits.h>.
(Also remove the configure check testing that "do ... while (0)" works
correctly; the non-do/while-based version of G_STMT_START and
G_STMT_END was removed years ago, but the check remained. Also, remove
some checks that configure.ac claimed were needed for libcharset, but
aren't actually used.)
Note that removing the g_memmove() function is not an ABI break even
on systems where g_memmove() was previously not a macro, because it
was never marked GLIB_AVAILABLE_IN_ALL or listed in glib.symbols, so
it would have been glib-internal since 2004.
https://bugzilla.gnome.org/show_bug.cgi?id=710519
This allows compilation with clang without errors, even when
-Wformat-nonliteral is active (as long as there are no real cases of
non literal formatting).
https://bugzilla.gnome.org/show_bug.cgi?id=691608
glib/tests/test-printf tests some non-standard printf formats on
Windows, which gcc doesn't recognize, and so complains about. Disable
those warnings for that test.
https://bugzilla.gnome.org/show_bug.cgi?id=688109
