Re: [PATCH] range-diff: support reading mbox files

>
> On Tue, Nov 15 2022, Johannes Schindelin via GitGitGadget wrote:
>
> > +		if (starts_with(line, "diff --git ")) {
> > +			struct patch patch = { 0 };
> > +			struct strbuf root = STRBUF_INIT;
> > +			int linenr = 0;
> > +			int orig_len;
> > +
> > +			state = MBOX_IN_DIFF;
> > +			old_count = new_count = 0;
> > +			strbuf_addch(&buf, '\n');
> > +			if (!util->diff_offset)
> > +				util->diff_offset = buf.len;
> > +			line[len - 1] = '\n';
> > +			orig_len = len;
> > +			len = parse_git_diff_header(&root, &linenr, 1, line,
> > +						    len, size, &patch);
>
> Try this with SANITIZE=leak, e.g. this seems to fix 1/4 leaks that pop
> up if you try the command noted in the patch:
>
> 	diff --git a/range-diff.c b/range-diff.c
> 	index 77fa9b970b1..7ff33f92e39 100644
> 	--- a/range-diff.c
> 	+++ b/range-diff.c
> 	@@ -142,6 +142,7 @@ static int read_mbox(const char *path, struct string_list *list)
> 	 			orig_len = len;
> 	 			len = parse_git_diff_header(&root, &linenr, 1, line,
> 	 						    len, size, &patch);
> 	+			free(patch.def_name);
> 	 			if (len < 0) {
> 	 				error(_("could not parse git header '%.*s'"),
> 	 				      orig_len, line);