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Add checks for NULL pointer in arrays.

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Fixes: Bug 599197 -  array ref and unref functions crash on NULL
array.

* garray.c: Added safety guards to all public functions, which did
not have them earlier. Now when NULL is passed to them, they will
issue a warning and return, instead of segfaulting.
This commit is contained in:
Krzesimir Nowak 2010-01-13 18:40:17 +01:00
parent 2b121c02ef
commit 33b011ce7d
1 changed files with 21 additions and 0 deletions
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21
glib/garray.c
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@ -218,6 +218,7 @@ GArray *
g_array_ref (GArray *array)
{
GRealArray *rarray = (GRealArray*) array;
g_return_val_if_fail (array, NULL);
g_return_val_if_fail (g_atomic_int_get (&rarray->ref_count) > 0, array);
g_atomic_int_inc (&rarray->ref_count);
return array;
@ -238,6 +239,7 @@ void
g_array_unref (GArray *array)
{
GRealArray *rarray = (GRealArray*) array;
g_return_if_fail (array);
g_return_if_fail (g_atomic_int_get (&rarray->ref_count) > 0);
if (g_atomic_int_dec_and_test (&rarray->ref_count))
g_array_free (array, TRUE);
@ -257,6 +259,9 @@ guint
g_array_get_element_size (GArray *array)
{
GRealArray *rarray = (GRealArray*) array;
g_return_val_if_fail (array, 0);
return rarray->elt_size;
}
@ -344,6 +349,8 @@ g_array_append_vals (GArray *farray,
{
GRealArray *array = (GRealArray*) farray;
g_return_val_if_fail (array, NULL);
g_array_maybe_expand (array, len);
memcpy (g_array_elt_pos (array, array->len), data,
@ -394,6 +401,8 @@ g_array_prepend_vals (GArray *farray,
{
GRealArray *array = (GRealArray*) farray;
g_return_val_if_fail (array, NULL);
g_array_maybe_expand (array, len);
g_memmove (g_array_elt_pos (array, len), g_array_elt_pos (array, 0),
@ -439,6 +448,8 @@ g_array_insert_vals (GArray *farray,
{
GRealArray *array = (GRealArray*) farray;
g_return_val_if_fail (array, NULL);
g_array_maybe_expand (array, len);
g_memmove (g_array_elt_pos (array, len + index_),
@ -468,6 +479,9 @@ g_array_set_size (GArray *farray,
guint length)
{
GRealArray *array = (GRealArray*) farray;
g_return_val_if_fail (array, NULL);
if (length > array->len)
{
g_array_maybe_expand (array, length - array->len);
@ -838,6 +852,9 @@ g_ptr_array_set_free_func (GPtrArray *array,
GDestroyNotify element_free_func)
{
GRealPtrArray* rarray = (GRealPtrArray*) array;
g_return_if_fail (array);
rarray->element_free_func = element_free_func;
}
@ -856,6 +873,8 @@ GPtrArray *
g_ptr_array_ref (GPtrArray *array)
{
GRealPtrArray *rarray = (GRealPtrArray*) array;
g_return_val_if_fail (array, NULL);
g_return_val_if_fail (g_atomic_int_get (&rarray->ref_count) > 0, array);
g_atomic_int_inc (&rarray->ref_count);
return array;
@ -876,6 +895,8 @@ void
g_ptr_array_unref (GPtrArray *array)
{
GRealPtrArray *rarray = (GRealPtrArray*) array;
g_return_if_fail (array);
g_return_if_fail (g_atomic_int_get (&rarray->ref_count) > 0);
if (g_atomic_int_dec_and_test (&rarray->ref_count))
g_ptr_array_free (array, TRUE);