Rohit Ashiwal <rohit.ashiwal265@xxxxxxxxx> writes: > Hi Junio > > On Mon, 15 Jul 2019 10:57:18 -0700 Junio C Hamano <gitster@xxxxxxxxx> wrote: >> >> Rohit Ashiwal <rohit.ashiwal265@xxxxxxxxx> writes: >> >> > + if (opts->ignore_whitespace) { >> > + struct strbuf buf = STRBUF_INIT; >> > + >> > + if (opts->strategy_opts) >> > + strbuf_addstr(&buf, opts->strategy_opts); >> > + >> > + strbuf_addstr(&buf, " --ignore-space-change"); >> > + free(opts->strategy_opts); >> >> Is this call to free() safe? > > Yes, as far as I can tell. Since up till now, `strategy_opts` is > either "NULL" or xstrdup()'d string. There is no double free involved. Doesn't it also come from handling OPT_STRING() via parse_options(), which gives a pointer from argv[], freeing something that is not allocated in the first place?