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breaking change: arrays of char do not convert to cstring; ptr to array of char does

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This commit is contained in:
Andreas Rumpf 2017-10-10 00:17:20 +02:00
commit 3308d26581
12 changed files with 73 additions and 36 deletions
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13
compiler/sigmatch.nim
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@ -1288,12 +1288,13 @@ proc typeRelImpl(c: var TCandidate, f, aOrig: PType,
of tyString: result = isConvertible
of tyPtr:
# ptr[Tag, char] is not convertible to 'cstring' for now:
if a.len == 1 and a.sons[0].kind == tyChar: result = isConvertible
of tyArray:
if (firstOrd(a.sons[0]) == 0) and
(skipTypes(a.sons[0], {tyRange}).kind in {tyInt..tyInt64}) and
(a.sons[1].kind == tyChar):
result = isConvertible
if a.len == 1:
let pointsTo = a.sons[0].skipTypes(abstractInst)
if pointsTo.kind == tyChar: result = isConvertible
elif pointsTo.kind == tyArray and firstOrd(pointsTo.sons[0]) == 0 and
skipTypes(pointsTo.sons[0], {tyRange}).kind in {tyInt..tyInt64} and
pointsTo.sons[1].kind == tyChar:
result = isConvertible
else: discard
of tyEmpty, tyVoid: