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fixes #4927

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This commit is contained in:
Araq 2016-10-22 13:41:46 +02:00
commit cdd69e951f
1 changed files with 7 additions and 2 deletions
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9
compiler/sempass2.nim
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@ -204,17 +204,22 @@ proc listGcUnsafety(s: PSym; onlyWarning: bool; cycleCheck: var IntSet) =
let u = s.gcUnsafetyReason
if u != nil and not cycleCheck.containsOrIncl(u.id):
let msgKind = if onlyWarning: warnGcUnsafe2 else: errGenerated
if u.kind in {skLet, skVar}:
case u.kind
of skLet, skVar:
message(s.info, msgKind,
("'$#' is not GC-safe as it accesses '$#'" &
" which is a global using GC'ed memory") % [s.name.s, u.name.s])
elif u.kind in routineKinds:
of routineKinds:
# recursive call *always* produces only a warning so the full error
# message is printed:
listGcUnsafety(u, true, cycleCheck)
message(s.info, msgKind,
"'$#' is not GC-safe as it calls '$#'" %
[s.name.s, u.name.s])
of skParam:
message(s.info, msgKind,
"'$#' is not GC-safe as it performs an indirect call via '$#'" %
[s.name.s, u.name.s])
else:
internalAssert u.kind == skUnknown
message(u.info, msgKind,