Commit 94c68c1f9ed74cd5e2b4ab4329166ba5e5d7abc3 | zig

author	Jakub Konka <kubkon@jakubkonka.com> 2023-02-07 19:27:11+01:00
committer	Jakub Konka <kubkon@jakubkonka.com> 2023-02-08 05:03:14+01:00
log	94c68c1f9ed74cd5e2b4ab4329166ba5e5d7abc3
tree	cc12e73c93487f40db91f1f2ecfdb2d303460bd7
parent	9ccd8ed0ad4cc9e68c2a2e0c9b1e32d50259357e

macho: fix incorrect representation of encodings count per page

There can be a maximum of 256 compact encodings per page in compact
unwind info, and we were using `u8` to represent the count which is insufficient.
This commit bumps it to `u9`.

1 files changed, 3 insertions(+), 3 deletions(-)

src
- link
  - MachO
    UnwindInfo.zig

src/link/MachO/UnwindInfo.zig+3-3

...	...	@@ -68,7 +68,7 @@ const Page = struct {
68	68	start: RecordIndex,
69	69	count: u16,
70	70	page_encodings: [max_compact_encodings]RecordIndex = undefined,
71		page_encodings_count: u8 = 0,
	71	page_encodings_count: u9 = 0,
72	72
73	73	fn appendPageEncoding(page: *Page, record_id: RecordIndex) void {
74	74	assert(page.page_encodings_count <= max_compact_encodings);
...	...	@@ -81,13 +81,13 @@ const Page = struct {
81	81	info: *const UnwindInfo,
82	82	enc: macho.compact_unwind_encoding_t,
83	83	) ?u8 {
84		comptime var index: u8 = 0;
	84	comptime var index: u9 = 0;
85	85	inline while (index < max_compact_encodings) : (index += 1) {
86	86	if (index >= page.page_encodings_count) return null;
87	87	const record_id = page.page_encodings[index];
88	88	const record = info.records.items[record_id];
89	89	if (record.compactUnwindEncoding == enc) {
90		return index;
	90	return @intCast(u8, index);
91	91	}
92	92	}
93	93	return null;