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Merge pull request #11948 from german77/hard_ring

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service: hid: Ensure GetNextEntryIndex can't fail
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liamwhite 2023-11-03 09:14:17 -04:00 committed by GitHub
commit eda403388a
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1 changed files with 3 additions and 3 deletions
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src/core/hle/service/hid/ring_lifo.h
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@ -32,15 +32,15 @@ struct Lifo {
} }
std::size_t GetPreviousEntryIndex() const { std::size_t GetPreviousEntryIndex() const {
return static_cast<size_t>((buffer_tail + total_buffer_count - 1) % total_buffer_count); return static_cast<size_t>((buffer_tail + max_buffer_size - 1) % max_buffer_size);
} }
std::size_t GetNextEntryIndex() const { std::size_t GetNextEntryIndex() const {
return static_cast<size_t>((buffer_tail + 1) % total_buffer_count); return static_cast<size_t>((buffer_tail + 1) % max_buffer_size);
} }
void WriteNextEntry(const State& new_state) { void WriteNextEntry(const State& new_state) {
if (buffer_count < total_buffer_count - 1) { if (buffer_count < static_cast<s64>(max_buffer_size) - 1) {
buffer_count++; buffer_count++;
} }
buffer_tail = GetNextEntryIndex(); buffer_tail = GetNextEntryIndex();