diff options
Diffstat (limited to 'compiler/sempass2.nim')
| -rw-r--r-- | compiler/sempass2.nim | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/compiler/sempass2.nim b/compiler/sempass2.nim index 517c37b0f..0358ed51a 100644 --- a/compiler/sempass2.nim +++ b/compiler/sempass2.nim @@ -207,9 +207,9 @@ proc markGcUnsafe(a: PEffects; reason: PNode) = a.owner.gcUnsafetyReason = newSym(skUnknown, getIdent("<unknown>"), a.owner, reason.info) -proc listGcUnsafety(s: PSym; onlyWarning: bool) = +proc listGcUnsafety(s: PSym; onlyWarning: bool; cycleCheck: var IntSet) = let u = s.gcUnsafetyReason - if u != nil: + if u != nil and not cycleCheck.containsOrIncl(u.id): let msgKind = if onlyWarning: warnGcUnsafe2 else: errGenerated if u.kind in {skLet, skVar}: message(s.info, msgKind, @@ -218,7 +218,7 @@ proc listGcUnsafety(s: PSym; onlyWarning: bool) = elif u.kind in routineKinds: # recursive call *always* produces only a warning so the full error # message is printed: - listGcUnsafety(u, true) + listGcUnsafety(u, true, cycleCheck) message(s.info, msgKind, "'$#' is not GC-safe as it calls '$#'" % [s.name.s, u.name.s]) @@ -227,6 +227,10 @@ proc listGcUnsafety(s: PSym; onlyWarning: bool) = message(u.info, msgKind, "'$#' is not GC-safe as it performs an indirect call here" % s.name.s) +proc listGcUnsafety(s: PSym; onlyWarning: bool) = + var cycleCheck = initIntSet() + listGcUnsafety(s, onlyWarning, cycleCheck) + proc useVar(a: PEffects, n: PNode) = let s = n.sym if isLocalVar(a, s): |