If searching for an element which is smaller than every element in the
array (i.e. the element being searched for is not in the array), the
previous g_array_binary_search() implementation would underflow in the
calculation `right = middle - 1`, and end up trying to dereference an
element way off the right of the array.
Fix that by checking the additions/subtractions before doing them, and
bailing if the bounds are hit. We don’t need to check `middle <
G_MAXUINT`, as `middle` is bounded above by `right`, which is always `<=
_array->len - 1`, and `_array->len <= G_MAXUINT`.
Add some tests for that, and for not-present elements in the middle of
the array. Previously, the tests only checked for not-present elements
which were bigger than every element in the array.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
If `right` and `left` are both near `G_MAXUINT`, it’s possible for the
addition to overflow, even if the eventual result would fit in a
`guint`. Avoid that by operating on the difference instead.
The difference is guaranteed to be positive due to the prior `left <=
right` check.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
The allocation size was set correctly before, but not the array length,
so the copied array appeared to have zero elements.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
We want to use the keyfile backend in sandboxes,
but we want to avoid people losing their existing
settings that are stored in dconf. Flatpak does
a migration from dconf to keyfile, but only if
the app explictly requests it.
From an app perspective, there are two steps to
the dconf->keyfile migration:
1. Request that flatpak do the migration, by adding
the migrate-path key to the metadata
2. Stop adding the 'dconf hole' to the sandbox
To keep us from switching to the keyfile backend
prematurely, look at whether the app has stopped
requesting a 'dconf hole' in the sandbox.
The plugin modules in these tests get statically linked with a separate
copy of GLib so they end up calling vfuncs in their own copy of GLib.
Fixes#1648
GLib checks for __sync_bool_compare_and_swap, and requires
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 to be defined if the function is available,
except with special cases like Linux armv5.
Extend the existing workaround to unbreak on old gcc versions that implement
__sync_bool_compare_and_swap but don't provide __GCC_HAVE_* macros.
Connect the dots between G_ADD_PRIVATE and the various G_DEFINE_* macros
that use it, as well as expanding the code example for
G_DEFINE_TYPE_EXTENDED with a private instance data declaration.
Closes: #943
v7, based on a patch by mrgard (GNOME/glib#1635)
make w32_adapter_ipv4_addr() C90-compliant
check for ERROR_BUFFER_OVERFLOW when calling GetAdaptersAddresses()
code-style fixes
indentation fixes
use g_try_(re)alloc and g_free
style suggestions by pwithnall
drop uni_count variable
cap maximum allowed interface name string length according to windows documentation
Fixes: #1635
We need to enable building the dirent and gnulib sources for clang-cl,
as we are still using the Microsoft-style headers and lib's and CRT.
We need to also do this for the following, for similar reasoning:
-Symbol export (via __declspec(dllexport))
-Dependency discovery without pkg-config files
-long long and ssize_t detection
We do, however, enable the autoptr tests for clang-cl builds. Note that
at this point real MSVC builds are still better supported than clang-cl
builds, and it will likely remain so for at least the near future,
alhtough real MSVC builds of the GTK stack are consumable and are usable
by clang-cl.
