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Fixed crash when accessing undefined user variable

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Presence of DECORATE user variable was not checked before attempting to read or write its value from ACS
This commit is contained in:
alexey.lysiuk 2016-02-20 15:34:41 +02:00 committed by Christoph Oelckers
parent b8f8daf1c1
commit 7b49d9d92c
1 changed files with 1 additions and 1 deletions
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2
src/p_acs.cpp
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@ -4564,13 +4564,13 @@ bool GetVarAddrType(AActor *self, FName varname, int index, void *&addr, PType *
{ {
PField *var = dyn_cast<PField>(self->GetClass()->Symbols.FindSymbol(varname, true)); PField *var = dyn_cast<PField>(self->GetClass()->Symbols.FindSymbol(varname, true));
PArray *arraytype; PArray *arraytype;
BYTE *baddr = reinterpret_cast<BYTE *>(self) + var->Offset;
if (var == NULL || (var->Flags & VARF_Native)) if (var == NULL || (var->Flags & VARF_Native))
{ {
return false; return false;
} }
type = var->Type; type = var->Type;
BYTE *baddr = reinterpret_cast<BYTE *>(self) + var->Offset;
arraytype = dyn_cast<PArray>(type); arraytype = dyn_cast<PArray>(type);
if (arraytype != NULL) if (arraytype != NULL)
{ {