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Avoid holding reference to a GAP bag when NewBag is called. #2294

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Mar 24, 2018
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Avoid holding reference to a GAP bag when NewBag is called. #2294

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6 changes: 4 additions & 2 deletions src/gap.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1177,7 +1177,10 @@ Obj CallErrorInner (
Obj lateMessage,
UInt printThisStatement)
{
Obj EarlyMsg;
// Must do this before creating any other GAP objects,
// as one of the args could be a pointer into a Bag.
Obj EarlyMsg = ErrorMessageToGAPString(msg, arg1, arg2);

Obj r = NEW_PREC(0);
Obj l;
Int i;
Expand All @@ -1186,7 +1189,6 @@ Obj CallErrorInner (
Region *savedRegion = TLS(currentRegion);
TLS(currentRegion) = TLS(threadRegion);
#endif
EarlyMsg = ErrorMessageToGAPString(msg, arg1, arg2);
AssPRec(r, RNamName("context"), STATE(CurrLVars));
AssPRec(r, RNamName("justQuit"), justQuit? True : False);
AssPRec(r, RNamName("mayReturnObj"), mayReturnObj? True : False);
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