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macho: fix incorrect representation of encodings count per page

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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`.
This commit is contained in:
Jakub Konka 2023-02-07 19:27:11 +01:00
parent 9ccd8ed0ad
commit 94c68c1f9e
1 changed files with 3 additions and 3 deletions
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6
src/link/MachO/UnwindInfo.zig
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@ -68,7 +68,7 @@ const Page = struct {
start: RecordIndex,
count: u16,
page_encodings: [max_compact_encodings]RecordIndex = undefined,
page_encodings_count: u8 = 0,
page_encodings_count: u9 = 0,
fn appendPageEncoding(page: *Page, record_id: RecordIndex) void {
assert(page.page_encodings_count <= max_compact_encodings);
@ -81,13 +81,13 @@ const Page = struct {
info: *const UnwindInfo,
enc: macho.compact_unwind_encoding_t,
) ?u8 {
comptime var index: u8 = 0;
comptime var index: u9 = 0;
inline while (index < max_compact_encodings) : (index += 1) {
if (index >= page.page_encodings_count) return null;
const record_id = page.page_encodings[index];
const record = info.records.items[record_id];
if (record.compactUnwindEncoding == enc) {
return index;
return @intCast(u8, index);
}
}
return null;