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garray: Steal segment during destruction

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And warn in other parts of the code if the caller attempts
to change the array bounds during destruction, this is not
a valid operation.

(Tweaked by Philip Withnall <withnall@endlessm.com> to not use inline
for loop declarations, since we can’t support them in GLib at the
moment.)

https://bugzilla.gnome.org/show_bug.cgi?id=769064
This commit is contained in:
Sam Spilsbury 2018-04-21 05:07:49 +07:00 committed by Philip Withnall
parent b93788ac13
commit 0e1a26dc49
1 changed files with 21 additions and 2 deletions
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23
glib/garray.c
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@ -1103,9 +1103,21 @@ ptr_array_free (GPtrArray *array,
if (flags & FREE_SEGMENT)
{
/* Data here is stolen and freed manually. It is an
* error to attempt to access the array data (including
* mutating the array bounds) during destruction).
*
* https://bugzilla.gnome.org/show_bug.cgi?id=769064
*/
gpointer *stolen_pdata = g_steal_pointer (&rarray->pdata);
if (rarray->element_free_func != NULL)
g_ptr_array_foreach (array, (GFunc) rarray->element_free_func, NULL);
g_free (rarray->pdata);
{
gsize i;
for (i = 0; i < rarray->len; ++i)
rarray->element_free_func (stolen_pdata[i]);
}
g_free (stolen_pdata);
segment = NULL;
}
else
@ -1158,6 +1170,7 @@ g_ptr_array_set_size (GPtrArray *array,
GRealPtrArray *rarray = (GRealPtrArray *)array;
g_return_if_fail (rarray);
g_return_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL));
if (length > rarray->len)
{
@ -1198,6 +1211,7 @@ g_ptr_array_remove_index (GPtrArray *array,
gpointer result;
g_return_val_if_fail (rarray, NULL);
g_return_val_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL), NULL);
g_return_val_if_fail (index_ < rarray->len, NULL);
@ -1239,6 +1253,7 @@ g_ptr_array_remove_index_fast (GPtrArray *array,
gpointer result;
g_return_val_if_fail (rarray, NULL);
g_return_val_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL), NULL);
g_return_val_if_fail (index_ < rarray->len, NULL);
@ -1282,6 +1297,7 @@ g_ptr_array_remove_range (GPtrArray *array,
guint n;
g_return_val_if_fail (rarray != NULL, NULL);
g_return_val_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL), NULL);
g_return_val_if_fail (index_ <= rarray->len, NULL);
g_return_val_if_fail (index_ + length <= rarray->len, NULL);
@ -1332,6 +1348,7 @@ g_ptr_array_remove (GPtrArray *array,
guint i;
g_return_val_if_fail (array, FALSE);
g_return_val_if_fail (array->len == 0 || (array->len != 0 && array->pdata != NULL), FALSE);
for (i = 0; i < array->len; i += 1)
{
@ -1369,6 +1386,7 @@ g_ptr_array_remove_fast (GPtrArray *array,
guint i;
g_return_val_if_fail (rarray, FALSE);
g_return_val_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL), FALSE);
for (i = 0; i < rarray->len; i += 1)
{
@ -1397,6 +1415,7 @@ g_ptr_array_add (GPtrArray *array,
GRealPtrArray *rarray = (GRealPtrArray *)array;
g_return_if_fail (rarray);
g_return_if_fail (rarray->len == 0 || (rarray->len != 0 && rarray->pdata != NULL));
g_ptr_array_maybe_expand (rarray, 1);