From 96286f14b0dc1a1c9ba4f6842d99ce738cc766da Mon Sep 17 00:00:00 2001 From: Tian Yuchen Date: Tue, 17 Feb 2026 01:20:28 +0800 Subject: [PATCH] symlinks: use unsigned int for flags The 'flags' and 'track_flags' fields in symlinks.c are used strictly as a collection of bits (using bitwise operators including &, |, ~). Using a signed integer for bitmasks may lead to undefined behavior with shift operations and logic errors if the MSB is touched. Change these fields from 'int' to 'unsigned int' to match our usage patterns. Signed-off-by: Tian Yuchen Signed-off-by: Junio C Hamano --- symlinks.c | 13 +++++++------ symlinks.h | 4 ++-- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/symlinks.c b/symlinks.c index 9cc090d42c..9e01ab3bc8 100644 --- a/symlinks.c +++ b/symlinks.c @@ -74,11 +74,12 @@ static inline void reset_lstat_cache(struct cache_def *cache) */ static int lstat_cache_matchlen(struct cache_def *cache, const char *name, int len, - int *ret_flags, int track_flags, + unsigned int *ret_flags, unsigned int track_flags, int prefix_len_stat_func) { int match_len, last_slash, last_slash_dir, previous_slash; - int save_flags, ret, saved_errno = 0; + unsigned int save_flags; + int ret, saved_errno = 0; struct stat st; if (cache->track_flags != track_flags || @@ -192,10 +193,10 @@ static int lstat_cache_matchlen(struct cache_def *cache, return match_len; } -static int lstat_cache(struct cache_def *cache, const char *name, int len, - int track_flags, int prefix_len_stat_func) +static unsigned int lstat_cache(struct cache_def *cache, const char *name, int len, + unsigned int track_flags, int prefix_len_stat_func) { - int flags; + unsigned int flags; (void)lstat_cache_matchlen(cache, name, len, &flags, track_flags, prefix_len_stat_func); return flags; @@ -234,7 +235,7 @@ int check_leading_path(const char *name, int len, int warn_on_lstat_err) static int threaded_check_leading_path(struct cache_def *cache, const char *name, int len, int warn_on_lstat_err) { - int flags; + unsigned int flags; int match_len = lstat_cache_matchlen(cache, name, len, &flags, FL_SYMLINK|FL_NOENT|FL_DIR, USE_ONLY_LSTAT); int saved_errno = errno; diff --git a/symlinks.h b/symlinks.h index 7ae3d5b856..25bf04f54f 100644 --- a/symlinks.h +++ b/symlinks.h @@ -5,8 +5,8 @@ struct cache_def { struct strbuf path; - int flags; - int track_flags; + unsigned int flags; + unsigned int track_flags; int prefix_len_stat_func; }; #define CACHE_DEF_INIT { \