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patch 9.0.1499: using uninitialized memory with fuzzy matching

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Problem:    Using uninitialized memory with fuzzy matching.
Solution:   Initialize the arrays used to store match positions.
This commit is contained in:
Bram Moolenaar
2023-04-29 21:38:04 +01:00
parent 58806c1553
commit caf642c25d
4 changed files with 40 additions and 11 deletions
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5
src/quickfix.c
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@@ -6058,6 +6058,8 @@ vgr_match_buflines(
long lnum;
colnr_T col;
int pat_len = (int)STRLEN(spat);
if (pat_len > MAX_FUZZY_MATCHES)
pat_len = MAX_FUZZY_MATCHES;
for (lnum = 1; lnum <= buf->b_ml.ml_line_count && *tomatch > 0; ++lnum)
{
@@ -6066,7 +6068,7 @@ vgr_match_buflines(
{
// Regular expression match
while (vim_regexec_multi(regmatch, curwin, buf, lnum,
col, NULL) > 0)
col, NULL) > 0)
{
// Pass the buffer number so that it gets used even for a
// dummy buffer, unless duplicate_name is set, then the
@@ -6112,6 +6114,7 @@ vgr_match_buflines(
int_u sz = ARRAY_LENGTH(matches);
// Fuzzy string match
CLEAR_FIELD(matches);
while (fuzzy_match(str + col, spat, FALSE, &score, matches, sz) > 0)
{
// Pass the buffer number so that it gets used even for a