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Adjust the correct chunk's free space in allocator (#23795)

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Fixes #23788
This commit is contained in:
SirOlaf
2024-07-08 11:15:53 +02:00
committed by GitHub
parent 4faa15f3ad
commit 3f5016f60e
1 changed files with 2 additions and 2 deletions
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4
lib/system/alloc.nim
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@@ -865,7 +865,7 @@ proc rawAlloc(a: var MemRegion, requestedSize: int): pointer =
when not defined(gcDestructors):
sysAssert(c.freeList.zeroField == 0, "rawAlloc 8")
c.freeList = c.freeList.next
dec(c.free, size)
dec(cast[PSmallChunk](pageAddr(result)).free, size)
sysAssert((cast[int](result) and (MemAlign-1)) == 0, "rawAlloc 9")
sysAssert(allocInv(a), "rawAlloc: end c != nil")
sysAssert(allocInv(a), "rawAlloc: before c.free < size")
@@ -948,7 +948,7 @@ proc rawDealloc(a: var MemRegion, p: pointer) =
inc(c.free, s)
else:
inc(c.free, s)
if c.free == SmallChunkSize-smallChunkOverhead():
if c.free == SmallChunkSize-smallChunkOverhead() and a.freeSmallChunks[s div MemAlign] == c:
listRemove(a.freeSmallChunks[s div MemAlign], c)
c.size = SmallChunkSize
freeBigChunk(a, cast[PBigChunk](c))