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vim-patch:9.0.1499: using uninitialized memory with fuzzy matching (#23399)

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Problem:    Using uninitialized memory with fuzzy matching.
Solution:   Initialize the arrays used to store match positions.

caf642c25d

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-04-30 08:27:38 +08:00
committed by GitHub
parent c194acbfc4
commit ab7dcefbeb
3 changed files with 36 additions and 3 deletions
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6
src/nvim/search.c
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@@ -3045,6 +3045,10 @@ static int fuzzy_match_recursive(const char *fuzpat, const char *str, uint32_t s
return 0;
}
int recursiveScore = 0;
uint32_t recursiveMatches[MAX_FUZZY_MATCHES];
CLEAR_FIELD(recursiveMatches);
// "Copy-on-Write" srcMatches into matches
if (first_match && srcMatches != NULL) {
memcpy(matches, srcMatches, (size_t)nextMatch * sizeof(srcMatches[0]));
@@ -3052,8 +3056,6 @@ static int fuzzy_match_recursive(const char *fuzpat, const char *str, uint32_t s
}
// Recursive call that "skips" this match
uint32_t recursiveMatches[MAX_FUZZY_MATCHES];
int recursiveScore = 0;
const char *const next_char = str + utfc_ptr2len(str);
if (fuzzy_match_recursive(fuzpat, next_char, strIdx + 1, &recursiveScore, strBegin, strLen,
matches, recursiveMatches,