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init checks and 'out' parameters (#14521)

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* I don't care about observable stores
* enforce explicit initializations
* cleaner code for the stdlib
* stdlib: use explicit initializations
* make tests green
* algorithm.nim: set result explicitly
* remove out parameters and bring the PR into a mergable state
* updated the changelog
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Andreas Rumpf 2020-06-23 10:53:57 +02:00 • committed by GitHub
commit da29222f86
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53 changed files with 355 additions and 257 deletions
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lib/system/alloc.nim
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@ -586,7 +586,8 @@ proc freeBigChunk(a: var MemRegion, c: PBigChunk) =
proc getBigChunk(a: var MemRegion, size: int): PBigChunk =
sysAssert(size > 0, "getBigChunk 2")
var size = size # roundup(size, PageSize)
var fl, sl: int
var fl = 0
var sl = 0
mappingSearch(size, fl, sl)
sysAssert((size and PageMask) == 0, "getBigChunk: unaligned chunk")
result = findSuitableBlock(a, fl, sl)