diff options
Diffstat (limited to 'lib/system/sysstr.nim')
-rw-r--r-- | lib/system/sysstr.nim | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/system/sysstr.nim b/lib/system/sysstr.nim index e4d6479ec..3621c4960 100644 --- a/lib/system/sysstr.nim +++ b/lib/system/sysstr.nim @@ -220,7 +220,10 @@ proc appendChar(dest: NimString, c: char) {.compilerproc, inline.} = proc setLengthStr(s: NimString, newLen: int): NimString {.compilerRtl.} = let n = max(newLen, 0) if s == nil: - result = mnewString(n) + if n == 0: + return s + else: + result = mnewString(n) elif n <= s.space: result = s else: @@ -301,7 +304,10 @@ proc setLengthSeqV2(s: PGenericSeq, typ: PNimType, newLen: int): PGenericSeq {. compilerRtl.} = sysAssert typ.kind == tySequence, "setLengthSeqV2: type is not a seq" if s == nil: - result = cast[PGenericSeq](newSeq(typ, newLen)) + if newLen == 0: + result = s + else: + result = cast[PGenericSeq](newSeq(typ, newLen)) else: let elemSize = typ.base.size let elemAlign = typ.base.align |