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restored record constructor checking for missing-but-mandatory fields

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This commit is contained in:
Vern Paxson 2022-02-28 15:33:03 -08:00
parent 9b184c3d4a
commit 3e0b46b963
1 changed files with 23 additions and 0 deletions
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23
src/Expr.cc
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@ -3375,6 +3375,8 @@ RecordConstructorExpr::RecordConstructorExpr(RecordTypePtr known_rt, ListExprPtr
const auto& exprs = op->AsListExpr()->Exprs();
map = std::vector<int>(exprs.length());
std::set<int> fields_seen; // used to check for missing fields
int i = 0;
for ( const auto& e : exprs )
{
@ -3401,6 +3403,27 @@ RecordConstructorExpr::RecordConstructorExpr(RecordTypePtr known_rt, ListExprPtr
SetError();
(*map)[i++] = index;
fields_seen.insert(index);
}
if ( IsError() )
return;
auto n = known_rt->NumFields();
for ( i = 0; i < n; ++i )
if ( fields_seen.count(i) == 0 )
{
const auto td_i = known_rt->FieldDecl(i);
if ( IsAggr(td_i->type) )
// These are always initialized.
continue;
if ( ! td_i->GetAttr(ATTR_OPTIONAL) )
{
auto err = std::string("mandatory field \"") + known_rt->FieldName(i) +
"\" missing";
ExprError(err.c_str());
}
}
}