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better fix

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araq
2026-04-02 09:35:39 +02:00
parent c6e85464df
commit 2cd037a465
1 changed files with 2 additions and 4 deletions
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6
lib/system/alloc.nim
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@@ -872,10 +872,8 @@ proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = 0): pointer
inc(a.allocCounter)
sysAssert(allocInv(a), "rawAlloc: begin")
sysAssert(roundup(65, 8) == 72, "rawAlloc: roundup broken")
var size = roundup(requestedSize, MemAlign)
let size = roundup(requestedSize, max(MemAlign, alignment))
let alignOff = smallChunkAlignOffset(alignment)
if alignment > MemAlign:
size = roundup(size, alignment)
sysAssert(size >= sizeof(FreeCell), "rawAlloc: requested size too small")
sysAssert(size >= requestedSize, "insufficient allocated size!")
#c_fprintf(stdout, "alloc; size: %ld; %ld\n", requestedSize, size)
@@ -979,7 +977,7 @@ proc rawAlloc(a: var MemRegion, requestedSize: int, alignment: int = 0): pointer
# Since chunks are page-aligned, the needed padding is a compile-time
# deterministic value rather than a worst-case estimate.
let alignPad = bigChunkAlignOffset(alignment)
size = requestedSize + bigChunkOverhead() + alignPad
let size = requestedSize + bigChunkOverhead() + alignPad
# allocate a large block
var c = if size >= HugeChunkSize: getHugeChunk(a, size)
else: getBigChunk(a, size)