On AIX, the system poll.h redefines the names of struct members,
for example `#define events reqevents`. This means that accesses
to GPollFD will fail to compile if poll.h was included after
glib/gpoll.h.
We can't simply add `#include <poll.h>` in glib/gpoll.h, because
that wouldn't work on platforms where poll.h doesn't exist, and
GLib supports some platforms in that category.
Resolves: https://gitlab.gnome.org/GNOME/glib/-/issues/3500
Why they’re necessary, why we _think_ the optimised implementation of
`g_utf8_validate()` is OK despite what valgrind and asan are telling us,
and how they work.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3493
Commit 760a6f647 rearranged how the lengths are calculated for the test
data and added `escape_data_string()` so they could be printed safely.
Unfortunately there was a miscount in the length of the first test
vector in `test_read_upto()`: there are 31 bytes in the string literal,
plus one nul terminator which is added by the compiler. The quoted
string length was 32 bytes. This should be fine (explicitly including
the nul delimiter), but then `escape_data_string()` adds another byte to
the length because it assumes the nul delimiter has *not* been included
in the count.
Changing the string length from 32 to 31 breaks the tests, as the final
component of the data is then the wrong length, so add an additional
explicit nul byte to the string literal so that it matches the length.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
This is a follow up to commit e7e5ddd2a. oss-fuzz found a case where
performance was pathologically bad with a long `stop_chars` string.
Since our inner loop in that case was iterating over `stop_chars` and
comparing each of them to `buffer[i]`, we can use `memchr()` the
opposite way round to in commit e7e5ddd2a to speed that up, using
`buffer[i]` as the needle in a `stop_chars` haystack.
From some brief testing, this doesn’t impact on the performance of a
more normal use case of having a short (<10 bytes long) `stop_chars`. I
was slightly concerned that the function call overhead of calling out to
`memchr()` would have an impact there, but apparently not.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
oss-fuzz#372994443
I wish people would stop moving their documentation around without
adding redirects. This is not how the internet is supposed to work.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
The existing g-io-module-default-singleton-calloc suppression
seems applicable to definite _g_io_module_get_default_type leaks
seen with Valgrind 3.23.0.
This check is necessary for Solaris & illumos, where 32-bit libelf
is incompatible with large-file mode, which meson forces to be enabled,
but 64-bit libelf works fine.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
For historical reasons, pid_t & mode_t are defined as long instead
of int for 32-bit processes in the Solaris headers, and even though
they are the same size, gcc issues -Wformat headers if you try to
print them with "%d" and "%u" instead of "%ld" & "%lu".
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Previously the build was requesting interfaces matching SUSv1/Unix95,
as implemented in Solaris 2.6 and later. This changes it to try the
most recent version supported, and limits to the versions supported
by OS versions that meson supports. This includes these _XOPEN_SOURCE
versions:
800 (2024): supported by illumos starting in July 2024
700 (2008): supported by Solaris 11.4 & illumos from 2014-2024
600 (2001): supported by Solaris 10-11.3 & illumos prior to 2014
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Like _GNU_SOURCE on glibc, this tells the header to define functions
not included in the requested standards versions. This is needed to
build glib/tests/utils-c-89 with -std=c89 and utils-c-89 with -std=c99
and still be able to call functions like isnan() and realpath().
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
The refactoring done by commit 168fd4f2b3
lost the definition of the open_max variable used in the Solaris ifdefs.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
The method was correctly returning an error from
`g_data_input_stream_read_line_utf8()` if the line contained invalid
UTF-8, but it wasn’t correctly setting the returned line length to 0.
This could have caused problems if callers were basing subsequent logic
on the length and not the return value nullness or `GError`.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
oss-fuzz#372819437
These two data structures are allocated once and live for the lifetime
of the process, and are leaked on exit. That’s fine, and intentional.
Add `g_ignore_leak()` to them to make that a bit clearer, and
communicate the intent to asan.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3472
The goal of this change is to avoid re-parsing `GVariantTypeInfo` on
every creation or parsing of a `GVariant` byte-buffer. Parsing presents
a non-trivial amount of overhead which can typically be elided.
It was discovered that many applications and tooling are re-generating
this information upon receiving a D-Bus message as they tend to process
messages serially, thus dropping the last reference count.
Previously, when the last reference count for a `GVariantTypeInfo` was
dropped we would finalize the parsed type information.
This change keeps `GVariantTypeInfo` alive in a Garbage Collected array.
The array is collected upon reaching a 32 entries. The number 32 was
chosen because it is larger than what I've seen active on various D-Bus
based applications-or-daemons.
Take a simple test case of using `GVariantBuilder` in a loop with a
debugoptimized build of GLib. A reduction in wallclock time can be
observed in the 35% to more than 70% based on the complexity of the
GVariant being created.
For cases like ibus-daemon, it was previously parsing `GVariantTypeInfo`
up to dozens of times per key-press/release cycle.
Closes: #3472
While reading a single byte or uint16 from an input stream is fairly
simple and uncontroversial, the code to read a line or read up to any of
a set of stop characters is not so trivial. People may be using
`GDataInputStream` to parse untrusted input like this, so we should
probably test that it’s robust against a variety of input conditions.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
This attempts to use GCC __attribute__((ifunc("resolver_func"))) to check
for valgrind early in the process startup so that the proper function is
dispatched instead of runtime checks within the function.
This should make #3493 less annoying when run under Valgrind.
...in the main tests that we expect to pass.
Due to an upstream issue in PCRE2-10.44, disable running the PCRE2 tests for
now, until the next release (or so) of PCRE2, as the issue has already been
resolved in upstream PCRE2 but has not made it to the PCRE2 release that we use
for our subprojects.
This introduces no functional changes, but documents the intent a bit
better in the code where these signal IDs are stored in a struct.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
This makes no functional changes, but does tidy the code up a bit and
means `g_steal_handle_id()` gets a bit more testing.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
