vim-patch:9.2.1081: memory leak in f_setmatches() (#41892)

Problem:  f_setmatches() increments lv_refcount of the position list "s"
          once for every "posN" entry it appends, but match_add() does
          not keep a reference and list_unref() is called only once.
          With two or more positions the list, and the position lists it
          references, are not released until the next garbage collection.
          When a "posN" value is not a List the function returns without
          releasing "s" at all.
Solution: Take one reference right after list_alloc(), drop the per-item
          increment, and list_unref() the list on the early return.  Add
          a test that reads the reference counts (dyingc).

closes: vim/vim#21284

https://github.com/vim/vim/commit/d5b24f50846e1728503a6c6d3d2670e0f2cada4e

Co-authored-by: dyingc <dyingc@hotmail.com>

0 files changed, 0 insertions, 0 deletions