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glocalfile: Add an assertion to help static analysis

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Static analysis of the call to `g_dir_new_from_dirp()` is tricky,
because the call is across library boundaries and indirected through a
vfunc map because it’s private to libglib.

Help the static analyser by adding an assertion about the input and
output values for `g_dir_new_from_dirp()`.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This commit is contained in:
Philip Withnall 2020-12-08 11:15:25 +00:00
parent b201e028b2
commit 3a7acd24a9
1 changed files with 5 additions and 3 deletions
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8
gio/glocalfile.c
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@ -2842,22 +2842,24 @@ g_local_file_measure_size_of_contents (gint fd,
gboolean success = TRUE;
const gchar *name;
GDir *dir;
gint saved_errno;
#ifdef AT_FDCWD
{
/* If this fails, we want to preserve the errno from fopendir() */
/* If this fails, we want to preserve the errno from fdopendir() */
DIR *dirp;
dirp = fdopendir (fd);
saved_errno = errno;
dir = dirp ? GLIB_PRIVATE_CALL(g_dir_new_from_dirp) (dirp) : NULL;
g_assert ((dirp == NULL) == (dir == NULL));
}
#else
dir = GLIB_PRIVATE_CALL(g_dir_open_with_errno) (dir_name->data, 0);
saved_errno = errno;
#endif
if (dir == NULL)
{
gint saved_errno = errno;
#ifdef AT_FDCWD
close (fd);
#endif