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remove noop option gc:v2 (#19810)

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* remove noop option gc:v2

* changelog
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flywind 2022-06-11 02:32:27 +08:00 • committed by GitHub
commit 8cde6ba6bc
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6 changed files with 7 additions and 18 deletions
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14
lib/system/sysstr.nim
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@ -304,20 +304,10 @@ proc setLengthSeq(seq: PGenericSeq, elemSize, elemAlign, newLen: int): PGenericS
when not defined(boehmGC) and not defined(nogc) and
not defined(gcMarkAndSweep) and not defined(gogc) and
not defined(gcRegions):
when false: # deadcode: was used by `compileOption("gc", "v2")`
if ntfNoRefs notin extGetCellType(result).base.flags:
for i in newLen..result.len-1:
let len0 = gch.tempStack.len
forAllChildrenAux(dataPointer(result, elemAlign, elemSize, i),
extGetCellType(result).base, waPush)
let len1 = gch.tempStack.len
for i in len0 ..< len1:
doDecRef(gch.tempStack.d[i], LocalHeap, MaybeCyclic)
gch.tempStack.len = len0
else:
if ntfNoRefs notin extGetCellType(result).base.flags:
for i in newLen..result.len-1:
forAllChildrenAux(dataPointer(result, elemAlign, elemSize, i),
extGetCellType(result).base, waZctDecRef)
extGetCellType(result).base, waZctDecRef)
# XXX: zeroing out the memory can still result in crashes if a wiped-out
# cell is aliased by another pointer (ie proc parameter or a let variable).