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mark: Fix out-of-bounds array access when iterating over global marks

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ZyX
2015-08-13 23:31:14 +03:00
parent 1a348f8ed8
commit 689390210a
1 changed files with 6 additions and 4 deletions
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10
src/nvim/mark.c
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@@ -1203,12 +1203,14 @@ const void *mark_global_iter(const void *const iter, char *const name,
const xfmark_T *iter_mark = (iter == NULL
? &(namedfm[0])
: (const xfmark_T *const) iter);
while (!iter_mark->fmark.mark.lnum
&& (size_t) (iter_mark - &(namedfm[0])) < ARRAY_SIZE(namedfm)) {
while ((size_t) (iter_mark - &(namedfm[0])) < ARRAY_SIZE(namedfm)
&& !iter_mark->fmark.mark.lnum) {
iter_mark++;
}
if (!iter_mark->fmark.mark.lnum) {
*fm = (xfmark_T) {.fmark = {.mark = {.lnum = 0}}};
if ((size_t) (iter_mark - &(namedfm[0])) == ARRAY_SIZE(namedfm)
|| !iter_mark->fmark.mark.lnum) {
*fm = (xfmark_T) { .fmark = { .mark = { .lnum = 0 } } };
return NULL;
}
size_t iter_off = (size_t) (iter_mark - &(namedfm[0]));
*name = (char) (iter_off < NMARKS