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Avoid potential use after free in stack__iter

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This commit is contained in:
Max Brunsfeld 2016-09-05 21:41:33 -07:00
parent f8b85965a3
commit d31934ac77
1 changed files with 2 additions and 1 deletions
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3
src/runtime/stack.c
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@ -204,6 +204,7 @@ INLINE StackPopResult stack__iter(Stack *self, StackVersion version,
array_clear(&self->iterators);
StackHead *head = array_get(&self->heads, version);
unsigned push_count = head->push_count;
Iterator iterator = {
.node = head->node,
.trees = array_new(),
@ -233,7 +234,7 @@ INLINE StackPopResult stack__iter(Stack *self, StackVersion version,
if (!ts_tree_array_copy(trees, &trees))
goto error;
array_reverse(&trees);
if (!ts_stack__add_slice(self, node, &trees, head->push_count + iterator->push_count))
if (!ts_stack__add_slice(self, node, &trees, push_count + iterator->push_count))
goto error;
}