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patch 9.1.0478: potential deref of NULL pointer in fuzzy_match_str_with_pos

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Problem:  potential deref of NULL pointer in fuzzy_match_str_with_pos()
          on cleanup (after v9.1.0476)
Solution: Only free the pointer if it is non-NULL (glepnir)

closes: #14973

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
glepnir
2024-06-12 20:31:13 +02:00
committed by Christian Brabandt
parent 1fb9eae579
commit 7c57940e3b
2 changed files with 12 additions and 5 deletions
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15
src/search.c
View File

@@ -5198,11 +5198,16 @@ fuzzy_match_str_with_pos(char_u *str UNUSED, char_u *pat UNUSED)
cleanup:
vim_free(tv_str.vval.v_string);
list_free(match_str_list);
list_free(match_pos_list);
list_free(match_score_list);
list_free(retlist);
list_free(l);
if (match_str_list != NULL)
list_free(match_str_list);
if (match_pos_list != NULL)
list_free(match_pos_list);
if (match_score_list != NULL)
list_free(match_score_list);
if (retlist != NULL)
list_free(retlist);
if (l != NULL)
list_free(l);
ga_clear(match_positions);
return NULL;
#else

2
src/version.c
View File

@@ -704,6 +704,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
478,
/**/
477,
/**/