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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/quickfix.c
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@@ -5215,7 +5215,10 @@ static bool vgr_match_buflines(qf_list_T *qfl, char *fname, buf_T *buf, char *sp
FUNC_ATTR_NONNULL_ARG(1, 3, 4, 5, 6)
{
bool found_match = false;
const size_t pat_len = strlen(spat);
size_t pat_len = strlen(spat);
if (pat_len > MAX_FUZZY_MATCHES) {
pat_len = MAX_FUZZY_MATCHES;
}
for (linenr_T lnum = 1; lnum <= buf->b_ml.ml_line_count && *tomatch > 0; lnum++) {
colnr_T col = 0;
@@ -5263,6 +5266,7 @@ static bool vgr_match_buflines(qf_list_T *qfl, char *fname, buf_T *buf, char *sp
const size_t sz = sizeof(matches) / sizeof(matches[0]);
// Fuzzy string match
CLEAR_FIELD(matches);
while (fuzzy_match(str + col, spat, false, &score, matches, (int)sz) > 0) {
// Pass the buffer number so that it gets used even for a
// dummy buffer, unless duplicate_name is set, then the