From 4107c0bb3455905aeacdba3be09b20e62b310eaa Mon Sep 17 00:00:00 2001 From: Deveshi Dwivedi Date: Wed, 11 Mar 2026 17:33:35 +0000 Subject: worktree: do not pass strbuf by value write_worktree_linking_files() takes two struct strbuf parameters by value, even though it only reads path strings from them. Passing a strbuf by value is misleading and dangerous. The structure carries a pointer to its underlying character array; caller and callee end up sharing that storage. If the callee ever causes the strbuf to be reallocated, the caller's copy becomes a dangling pointer, which results in a double-free when the caller does strbuf_release(). The function only needs the string values, not the strbuf machinery. Switch it to take const char * and update all callers to pass .buf. Signed-off-by: Deveshi Dwivedi Signed-off-by: Junio C Hamano --- builtin/worktree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'builtin') diff --git a/builtin/worktree.c b/builtin/worktree.c index bc2d0d645b..4035b1cb06 100644 --- a/builtin/worktree.c +++ b/builtin/worktree.c @@ -539,7 +539,7 @@ static int add_worktree(const char *path, const char *refname, strbuf_reset(&sb); strbuf_addf(&sb, "%s/gitdir", sb_repo.buf); - write_worktree_linking_files(sb_git, sb, opts->relative_paths); + write_worktree_linking_files(sb_git.buf, sb.buf, opts->relative_paths); strbuf_reset(&sb); strbuf_addf(&sb, "%s/commondir", sb_repo.buf); write_file(sb.buf, "../.."); -- cgit v1.3