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[Reflection] Fix async task slab size calculation.

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The calculation failed to account for padding after the slab struct itself. We already account for this padding in HeaderSize, so use that instead of the raw struct size.

rdar://87607280
This commit is contained in:
Mike Ash
2022-01-19 12:36:10 -05:00
parent 4b217bc1b0
commit f3493bf149
1 changed files with 2 additions and 2 deletions
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4
include/swift/Reflection/ReflectionContext.h
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@@ -1372,8 +1372,8 @@ public:
Chunk.Length = Slab->CurrentOffset;
Chunk.Kind = AsyncTaskAllocationChunk::ChunkKind::Unknown;
// Total slab size is the slab's capacity plus the slab struct itself.
StoredPointer SlabSize = Slab->Capacity + sizeof(*Slab);
// Total slab size is the slab's capacity plus the header.
StoredPointer SlabSize = Slab->Capacity + HeaderSize;
return {llvm::None, {Slab->Next, SlabSize, {Chunk}}};
}