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Code Issues

Backport fix for CORE-2888 - A memory corruption cause incorrect query evaluation and may crash the server

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asfernandes 2010-02-28 14:42:04 +00:00
parent ffd793d9ce
commit eb705dbc6e
1 changed files with 7 additions and 2 deletions
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9
src/dsql/pass1.cpp
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@ -7053,8 +7053,13 @@ static dsql_nod* pass1_make_derived_field(CompiledStatement* statement, thread_d
// Try to generate derived field from sub-select
dsql_nod* derived_field = pass1_make_derived_field(statement, tdbb,
select_item->nod_arg[e_via_value_1]);
derived_field->nod_arg[e_derived_field_value] = select_item;
return derived_field;
if (derived_field->nod_type == nod_derived_field)
{
derived_field->nod_arg[e_derived_field_value] = select_item;
return derived_field;
}
return select_item;
}
default: