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explicitly 0-index backing array

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This commit is contained in:
Kevin Krakauer
2021-05-07 13:51:09 -07:00
parent 66de003e19
commit 314a5f8d7e
1 changed files with 2 additions and 2 deletions
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pkg/atomicbitops/aligned_32bit_unsafe.go
+2 -2
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@@ -40,7 +40,7 @@ func (aa *AlignedAtomicInt64) ptr() *int64 {
// In the 15-byte aa.value, there are guaranteed to be 8 contiguous
// bytes with 64-bit alignment. We find an address in this range by
// adding 7, then clear the 3 least significant bits to get its start.
return (*int64)(unsafe.Pointer((uintptr(unsafe.Pointer(&aa.value)) + 7) &^ 7))
return (*int64)(unsafe.Pointer((uintptr(unsafe.Pointer(&aa.value[0])) + 7) &^ 7))
}
// Load is analagous to atomic.LoadInt64.
@@ -77,7 +77,7 @@ func (aa *AlignedAtomicUint64) ptr() *uint64 {
// In the 15-byte aa.value, there are guaranteed to be 8 contiguous
// bytes with 64-bit alignment. We find an address in this range by
// adding 7, then clear the 3 least significant bits to get its start.
return (*uint64)(unsafe.Pointer((uintptr(unsafe.Pointer(&aa.value)) + 7) &^ 7))
return (*uint64)(unsafe.Pointer((uintptr(unsafe.Pointer(&aa.value[0])) + 7) &^ 7))
}
// Load is analagous to atomic.LoadUint64.