diff options
Diffstat (limited to 'compiler/sigmatch.nim')
| -rw-r--r-- | compiler/sigmatch.nim | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/compiler/sigmatch.nim b/compiler/sigmatch.nim index 7a5aa8dbb..9a8f865a6 100644 --- a/compiler/sigmatch.nim +++ b/compiler/sigmatch.nim @@ -1796,16 +1796,19 @@ proc argtypeMatches*(c: PContext, f, a: PType): bool = result = res != nil proc instTypeBoundOp*(c: PContext; dc: PSym; t: PType; info: TLineInfo; - op: TTypeAttachedOp): PSym {.procvar.} = + op: TTypeAttachedOp; col: int): PSym {.procvar.} = var m: TCandidate initCandidate(c, m, dc.typ) - var f = dc.typ.sons[1] + if col >= dc.typ.len: + localError(info, errGenerated, "cannot instantiate '" & dc.name.s & "'") + return nil + var f = dc.typ.sons[col] if op == attachedDeepCopy: if f.kind in {tyRef, tyPtr}: f = f.lastSon else: if f.kind == tyVar: f = f.lastSon if typeRel(m, f, t) == isNone: - localError(info, errGenerated, "cannot instantiate 'deepCopy'") + localError(info, errGenerated, "cannot instantiate '" & dc.name.s & "'") else: result = c.semGenerateInstance(c, dc, m.bindings, info) assert sfFromGeneric in result.flags |