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vim-patch:8.2.4963: expanding path with "/**" may overrun end of buffer

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Problem:    Expanding path with "/**" may overrun end of buffer.
Solution:   Use vim_snprintf().

386c24cd26

Co-authored-by: Bram Moolenaar <Bram@vim.org>
(cherry picked from commit ad5bced637)
This commit is contained in:
zeertzjq
2025-03-15 08:14:31 +08:00
committed by github-actions[bot]
parent c5eeb1b9ee
commit 52ad6adc8d
1 changed files with 4 additions and 4 deletions
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8
src/nvim/path.c
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@ -633,7 +633,8 @@ static size_t do_path_expand(garray_T *gap, const char *path, size_t wildoff, in
// Make room for file name. When doing encoding conversion the actual
// length may be quite a bit longer, thus use the maximum possible length.
char *buf = xmalloc(MAXPATHL);
const size_t buflen = MAXPATHL;
char *buf = xmalloc(buflen);
// Find the first part in the path name that contains a wildcard.
// When EW_ICASE is set every letter is considered to be a wildcard.
@ -751,14 +752,13 @@ static size_t do_path_expand(garray_T *gap, const char *path, size_t wildoff, in
if (starstar && stardepth < 100) {
// For "**" in the pattern first go deeper in the tree to
// find matches.
STRCPY(buf + len, "/**"); // NOLINT
STRCPY(buf + len + 3, path_end);
vim_snprintf(buf + len, buflen - len, "/**%s", path_end); // NOLINT
stardepth++;
do_path_expand(gap, buf, len + 1, flags, true);
stardepth--;
}
STRCPY(buf + len, path_end);
vim_snprintf(buf + len, buflen - len, "%s", path_end);
if (path_has_exp_wildcard(path_end)) { // handle more wildcards
// need to expand another component of the path
// remove backslashes for the remaining components only