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Fix big endian issue in Interlocked test cases #101429

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merged 2 commits into from
Apr 25, 2024
Merged

Fix big endian issue in Interlocked test cases #101429

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9ee68a0
Fix big endian issue in Interlocked test cases
Apr 23, 2024
a552af5
Fix big endian issue in Interlocked test cases
Apr 23, 2024
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4 changes: 2 additions & 2 deletions src/libraries/System.Private.CoreLib/src/System/Threading/Interlocked.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ public static unsafe ushort Exchange(ref ushort location1, ushort value)
nuint offset = Unsafe.OpportunisticMisalignment(ref location1, sizeof(uint));
ref uint alignedRef = ref Unsafe.As<ushort, uint>(ref Unsafe.SubtractByteOffset(ref location1, offset));
int bitOffset =
(int)((BitConverter.IsLittleEndian ? offset : sizeof(uint) - offset - sizeof(byte)) * 8); // to bit offset
(int)((BitConverter.IsLittleEndian ? offset : sizeof(uint) - offset - sizeof(ushort)) * 8); // to bit offset
Debug.Assert(bitOffset is 0 or 16);
uint mask = ~((uint)ushort.MaxValue << bitOffset);
uint shiftedValue = (uint)value << bitOffset;
Expand Down Expand Up @@ -308,7 +308,7 @@ public static unsafe ushort CompareExchange(ref ushort location1, ushort value,
nuint offset = Unsafe.OpportunisticMisalignment(ref location1, sizeof(uint));
ref uint alignedRef = ref Unsafe.As<ushort, uint>(ref Unsafe.SubtractByteOffset(ref location1, offset));
int bitOffset =
(int)((BitConverter.IsLittleEndian ? offset : sizeof(uint) - offset - sizeof(byte)) * 8); // to bit offset
(int)((BitConverter.IsLittleEndian ? offset : sizeof(uint) - offset - sizeof(ushort)) * 8); // to bit offset
Debug.Assert(bitOffset is 0 or 16);
uint mask = ~((uint)ushort.MaxValue << bitOffset);
uint shiftedValue = (uint)value << bitOffset;
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