mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

checkout: clarify memory ownership in unique_tracking_name()

Browse Source 
The function `unique_tracking_name()` returns an allocated string, but
does not clearly indicate this because its return type is `const char *`
instead of `char *`. This has led to various callsites where we never
free its returned memory at all, which causes memory leaks.

Plug those leaks and mark now-passing tests as leak free.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-05-27 13:46:06 +02:00
committed by Junio C Hamano
parent 94e2aa555e
commit cc395d6b47
14 changed files with 34 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
builtin/worktree.c
View File

@ -736,16 +736,14 @@ static int dwim_orphan(const struct add_opts *opts, int opt_track, int remote)
return 1;
}
static const char *dwim_branch(const char *path, const char **new_branch)
static char *dwim_branch(const char *path, char **new_branch)
{
int n;
int branch_exists;
const char *s = worktree_basename(path, &n);
const char *branchname = xstrndup(s, n);
char *branchname = xstrndup(s, n);
struct strbuf ref = STRBUF_INIT;
UNLEAK(branchname);
branch_exists = !strbuf_check_branch_ref(&ref, branchname) &&
refs_ref_exists(get_main_ref_store(the_repository),
ref.buf);
@ -756,8 +754,7 @@ static const char *dwim_branch(const char *path, const char **new_branch)
*new_branch = branchname;
if (guess_remote) {
struct object_id oid;
const char *remote =
unique_tracking_name(*new_branch, &oid, NULL);
char *remote = unique_tracking_name(*new_branch, &oid, NULL);
return remote;
}
return NULL;
@ -769,6 +766,8 @@ static int add(int ac, const char **av, const char *prefix)
const char *new_branch_force = NULL;
char *path;
const char *branch;
char *branch_to_free = NULL;
char *new_branch_to_free = NULL;
const char *new_branch = NULL;
const char *opt_track = NULL;
const char *lock_reason = NULL;
@ -859,16 +858,17 @@ static int add(int ac, const char **av, const char *prefix)
opts.orphan = dwim_orphan(&opts, !!opt_track, 0);
} else if (ac < 2) {
/* DWIM: Guess branch name from path. */
const char *s = dwim_branch(path, &new_branch);
char *s = dwim_branch(path, &new_branch_to_free);
if (s)
branch = s;
branch = branch_to_free = s;
new_branch = new_branch_to_free;
/* DWIM: Infer --orphan when repo has no refs. */
opts.orphan = (!s) && dwim_orphan(&opts, !!opt_track, 1);
} else if (ac == 2) {
struct object_id oid;
struct commit *commit;
const char *remote;
char *remote;
commit = lookup_commit_reference_by_name(branch);
if (!commit) {
@ -923,6 +923,8 @@ static int add(int ac, const char **av, const char *prefix)
ret = add_worktree(path, branch, &opts);
free(path);
free(branch_to_free);
free(new_branch_to_free);
return ret;
}