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Merge pull request #2333 from def-/recursive-type

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Fix infinite recursion in semtypes with recursive types
This commit is contained in:
Andreas Rumpf 2015-03-15 00:46:33 +01:00
commit faad6ed67f
2 changed files with 10 additions and 0 deletions
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2
compiler/semtypes.nim
View file

@ -787,6 +787,8 @@ proc liftParamType(c: PContext, procKind: TSymKind, genericParams: PNode,
result = addImplicitGeneric(typ) result = addImplicitGeneric(typ)
else: else:
for i in 0 .. <paramType.sons.len: for i in 0 .. <paramType.sons.len:
if paramType.sons[i] == paramType:
globalError(info, errIllegalRecursionInTypeX, typeToString(paramType))
var lifted = liftingWalk(paramType.sons[i]) var lifted = liftingWalk(paramType.sons[i])
if lifted != nil: if lifted != nil:
paramType.sons[i] = lifted paramType.sons[i] = lifted

8
tests/types/tinfiniterecursion.nim Normal file
View file

@ -0,0 +1,8 @@
discard """
errormsg: "illegal recursion in type 'XIM'"
line: 8
"""
type
XIM* = ptr XIM
XIMProc* = proc (a2: XIM)